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Crossover study

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Statisticians suggest that designs should have four periods, which is more efficient than the two-period design, even if the study must be truncated to three periods. However, the two-period design is often taught in non-statistical textbooks, partly because of its simplicity.
313:, because it is possible that the order in which treatments are administered may affect the outcome. An example might be a drug with many adverse effects given first, making patients taking a second, less harmful medicine, more sensitive to any adverse effect. 290:
Optimal crossover designs are discussed in the graduate textbook by Jones and Kenward and in the review article by Stufken. Crossover designs are discussed along with more general repeated-measurements designs in the graduate textbook by Vonesh and Chinchilli.
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Nearly all crossover are designed to have "balance", whereby all subjects receive the same number of treatments and participate for the same number of periods. In most crossover trials each subject receives all treatments, in a random order.
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Jones, B., & Kenward, M. G. (2003). Design and analysis of cross-over trials (2nd ed.). Boca Raton, Fla.: Chapman & Hall/CRC.
2496: 158:, the same measures are collected multiple times for each subject. A crossover trial has a repeated measures design in which each 2935: 535: 516: 488: 1358: 1058: 1962: 1110: 934: 554: 502: 449: 425: 2745: 2637: 985: 823: 732: 578: 474: 83: 61: 17: 54: 3350: 2923: 2797: 28: 2981: 2642: 2387: 1758: 1348: 998: 706: 692: 346: 310: 3382: 3032: 2244: 2051: 1940: 1898: 1003: 1972: 3275: 2234: 1137: 303:. For curative treatments or rapidly changing conditions, cross-over trials may be infeasible or unethical. 2826: 2775: 2760: 2750: 2619: 2491: 2458: 2284: 2239: 2069: 904: 869: 801: 657: 571: 264:. In a randomized non-crossover study it is often the case that different treatment-groups are found to be 3338: 3170: 2971: 2895: 2196: 1950: 1619: 1083: 1025: 974: 886: 523: 351: 234: 3372: 3055: 3027: 3022: 2770: 2529: 2435: 2415: 2323: 2034: 1852: 1335: 1207: 782: 195: 287:, and so require fewer subjects than do non-crossover designs (even other repeated measures designs). 2787: 2555: 2276: 2201: 2130: 2059: 1979: 1967: 1837: 1825: 1818: 1526: 1247: 3377: 3270: 3037: 2900: 2585: 2550: 2514: 2299: 1741: 1650: 1609: 1521: 1212: 1051: 960: 955: 920: 804: 722: 677: 672: 155: 48: 3179: 2792: 2732: 2669: 2307: 2291: 2029: 1891: 1881: 1731: 1645: 928: 284: 202:
before the trial can begin. Most clinical trials are analyzed using repeated-measurements ANOVA (
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to different arms of the study which receive different treatments. When the trial has a
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is assigned to a sequence of two or more treatments, of which one may be a
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Vonesh, Edward F.; Chinchilli, Vernon G. (1997). "Crossover Experiments".
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These studies are often done to improve the symptoms of patients with
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Linear and Nonlinear Models for the Analysis of Repeated Measurements
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Stufken, J. (1996). "Optimal Crossover Designs". In Ghosh, S.;
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Second is the issue of "carry-over" between treatments, which
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is reduced because each crossover patient serves as their own
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D. A. Ratkowsky, M. A. Evans, and J. R. Alldredge (1992).
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crossover designs, such imbalances are implausible (unless
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Cross-Over Experiments: Design, Analysis, and Application.
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Crossover Designs: Testing, Estimation, and Sample Size
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Autoregressive conditional heteroskedasticity (ARCH)
194:, which must have been approved by the appropriate 2411: 245:A crossover study has two advantages over both a 3364: 544: 467:Statistical Questions in Evidence Based Medicine 294: 217:In most longitudinal studies of human subjects, 2497:Multivariate adaptive regression splines (MARS) 430:D. E. Johnson (2010). Crossover experiments. 120:(or exposures). While crossover studies can be 549:. London: Chapman and Hall. pp. 111–202. 1052: 579: 481:Repeated Measurements and Cross-Over Designs. 444:(Third ed.). London: Chapman and Hall. 521: 306:Crossover studies often have two problems: 1097: 1059: 1045: 586: 572: 440:Jones, Byron; Kenward, Michael G. (2014). 332:of the treatment, which is often unknown. 1710: 593: 84:Learn how and when to remove this message 442:Design and Analysis of Cross-Over Trials 47:This article includes a list of general 509:Cross-Over Trials in Clinical Research, 469:. New York: Oxford University Press. 221:may withdraw from the trial or become " 124:, many important crossover studies are 14: 3365: 3023:Kaplan–Meier estimator (product limit) 479:D. Raghavarao and L. Padgett (2014). 3096: 2663: 2410: 1709: 1479: 1096: 1040: 567: 268:on some covariates. In a controlled, 3333: 3033:Accelerated failure time (AFT) model 33: 3345: 2628:Analysis of variance (ANOVA, anova) 1480: 935:Generalized randomized block design 24: 2723:Cochran–Mantel–Haenszel statistics 1349:Pearson product-moment correlation 528:Design and Analysis of Experiments 276:systematically during the study). 53:it lacks sufficient corresponding 25: 3394: 986:Sequential probability ratio test 3344: 3332: 3320: 3307: 3306: 3097: 1009: 911:Polynomial and rational modeling 116:receive a sequence of different 38: 29:crossover experiment (chemistry) 2982:Least-squares spectral analysis 347:Glossary of experimental design 186:The data is analyzed using the 1963:Mean-unbiased minimum-variance 1066: 678:Replication versus subsampling 397: 388: 385:Vonesh & Chinchilli (1997) 379: 13: 1: 3276:Geographic information system 2492:Simultaneous equations models 410: 295:Limitations and disadvantages 240: 2459:Coefficient of determination 2070:Uniformly most powerful test 905:Response surface methodology 813:Analysis of variance (Anova) 416:M. Bose and A. Dey (2009). 7: 3028:Proportional hazards models 2972:Spectral density estimation 2954:Vector autoregression (VAR) 2388:Maximum posterior estimator 1620:Randomized controlled trial 975:Randomized controlled trial 352:Randomized controlled trial 335: 196:institutional review boards 181: 10: 3399: 2788:Multivariate distributions 1208:Average absolute deviation 394:Jones & Kenward (2003) 253:. First, the influence of 190:that was specified in the 26: 3302: 3256: 3193: 3146: 3109: 3105: 3092: 3064: 3046: 3013: 3004: 2962: 2909: 2870: 2819: 2810: 2776:Structural equation model 2731: 2688: 2684: 2659: 2618: 2584: 2538: 2505: 2467: 2434: 2430: 2406: 2346: 2255: 2174: 2138: 2129: 2112:Score/Lagrange multiplier 2097: 2050: 1995: 1921: 1912: 1722: 1718: 1705: 1664: 1638: 1590: 1545: 1527:Sample size determination 1492: 1488: 1475: 1379: 1334: 1308: 1290: 1246: 1198: 1118: 1109: 1105: 1092: 1074: 994: 863: 758: 691: 601: 418:Optimal Crossover Designs 274:covariates were to change 3271:Environmental statistics 2793:Elliptical distributions 2586:Generalized linear model 2515:Simple linear regression 2285:Hodges–Lehmann estimator 1742:Probability distribution 1651:Stochastic approximation 1213:Coefficient of variation 961:Repeated measures design 673:Restricted randomization 372: 156:repeated measures design 2931:Cross-correlation (XCF) 2539:Non-standard predictors 1973:Lehmann–ScheffĂ© theorem 1646:Adaptive clinical trial 511:Second edition. Wiley. 465:Najafi Mehdi, (2004). 285:statistically efficient 192:clinical trial protocol 68:more precise citations. 3327:Mathematics portal 3148:Engineering statistics 3056:Nelson–Aalen estimator 2633:Analysis of covariance 2520:Ordinary least squares 2444:Pearson product-moment 1848:Statistical functional 1759:Empirical distribution 1592:Controlled experiments 1321:Frequency distribution 1099:Descriptive statistics 1016:Mathematics portal 778:Ordinary least squares 420:. World Scientific. 309:First is the issue of 283:crossover designs are 138:pharmaceutical science 130:scientific disciplines 126:controlled experiments 3383:Design of experiments 3243:Population statistics 3185:System identification 2919:Autocorrelation (ACF) 2847:Exponential smoothing 2761:Discriminant analysis 2756:Canonical correlation 2620:Partition of variance 2482:Regression validation 2326:(Jonckheere–Terpstra) 2225:Likelihood-ratio test 1914:Frequentist inference 1826:Location–scale family 1747:Sampling distribution 1712:Statistical inference 1679:Cross-sectional study 1666:Observational studies 1625:Randomized experiment 1454:Stem-and-leaf display 1256:Central limit theorem 613:Scientific experiment 595:Design of experiments 367:Single-subject design 342:Design of experiments 122:observational studies 3166:Probabilistic design 2751:Principal components 2594:Exponential families 2546:Nonlinear regression 2525:General linear model 2487:Mixed effects models 2477:Errors and residuals 2454:Confounding variable 2356:Bayesian probability 2334:Van der Waerden test 2324:Ordered alternative 2089:Multiple comparisons 1968:Rao–Blackwellization 1931:Estimating equations 1887:Statistical distance 1605:Factorial experiment 1138:Arithmetic-Geometric 887:Fractional factorial 458:K.-J. Lui, (2016). 249:and a non-crossover 204:analysis of variance 3238:Official statistics 3161:Methods engineering 2842:Seasonal adjustment 2610:Poisson regressions 2530:Bayesian regression 2469:Regression analysis 2449:Partial correlation 2421:Regression analysis 2020:Prediction interval 2015:Likelihood interval 2005:Confidence interval 1997:Interval estimation 1958:Unbiased estimators 1776:Model specification 1656:Up-and-down designs 1344:Partial correlation 1300:Index of dispersion 1218:Interquartile range 1021:Statistical outline 981:Sequential analysis 946:Graeco-Latin square 855:Multiple comparison 802:Hierarchical model: 200:regulatory agencies 150:, the subjects are 3258:Spatial statistics 3138:Medical statistics 3038:First hitting time 2992:Whittle likelihood 2643:Degrees of freedom 2638:Multivariate ANOVA 2571:Heteroscedasticity 2383:Bayesian estimator 2348:Bayesian inference 2197:Kolmogorov–Smirnov 2082:Randomization test 2052:Testing hypotheses 2025:Tolerance interval 1936:Maximum likelihood 1831:Exponential family 1764:Density estimation 1724:Statistical theory 1684:Natural experiment 1630:Scientific control 1547:Survey methodology 1233:Standard deviation 1026:Statistical topics 618:Statistical design 507:Senn, S. (2002). 301:chronic conditions 251:longitudinal study 235:intention to treat 188:statistical method 164:standard treatment 110:longitudinal study 3373:Clinical research 3360: 3359: 3298: 3297: 3294: 3293: 3233:National accounts 3203:Actuarial science 3195:Social statistics 3088: 3087: 3084: 3083: 3080: 3079: 3015:Survival function 3000: 2999: 2862:Granger causality 2703:Contingency table 2678:Survival analysis 2655: 2654: 2651: 2650: 2507:Linear regression 2402: 2401: 2398: 2397: 2373:Credible interval 2342: 2341: 2125: 2124: 1941:Method of moments 1810:Parametric family 1771:Statistical model 1701: 1700: 1697: 1696: 1615:Random assignment 1537:Statistical power 1471: 1470: 1467: 1466: 1316:Contingency table 1286: 1285: 1153:Generalized/power 1034: 1033: 921:Central composite 819:Cochran's theorem 773:Linear regression 750:Nuisance variable 663:Random assignment 640:Experimental unit 537:978-0-444-82061-7 517:978-0-471-49653-3 489:978-1-118-70925-2 357:Survival analysis 326:treatment effects 223:lost to follow-up 152:randomly assigned 94: 93: 86: 18:Crossover studies 16:(Redirected from 3390: 3348: 3347: 3336: 3335: 3325: 3324: 3310: 3309: 3213:Crime statistics 3107: 3106: 3094: 3093: 3011: 3010: 2977:Fourier analysis 2964:Frequency domain 2944: 2891: 2857:Structural break 2817: 2816: 2766:Cluster analysis 2713:Log-linear model 2686: 2685: 2661: 2660: 2602: 2576:Homoscedasticity 2432: 2431: 2408: 2407: 2327: 2319: 2311: 2310:(Kruskal–Wallis) 2295: 2280: 2235:Cross validation 2220: 2202:Anderson–Darling 2149: 2136: 2135: 2107:Likelihood-ratio 2099:Parametric tests 2077:Permutation test 2060:1- & 2-tails 1951:Minimum distance 1923:Point estimation 1919: 1918: 1870:Optimal decision 1821: 1720: 1719: 1707: 1706: 1689:Quasi-experiment 1639:Adaptive designs 1490: 1489: 1477: 1476: 1354:Rank correlation 1116: 1115: 1107: 1106: 1094: 1093: 1061: 1054: 1047: 1038: 1037: 1014: 1013: 951:Orthogonal array 588: 581: 574: 565: 564: 560: 541: 497:Marcel Dekker. 455: 404: 401: 395: 392: 386: 383: 140:, and medicine. 89: 82: 78: 75: 69: 64:this article by 55:inline citations 42: 41: 34: 21: 3398: 3397: 3393: 3392: 3391: 3389: 3388: 3387: 3378:Clinical trials 3363: 3362: 3361: 3356: 3319: 3290: 3252: 3189: 3175:quality control 3142: 3124:Clinical trials 3101: 3076: 3060: 3048:Hazard function 3042: 2996: 2958: 2942: 2905: 2901:Breusch–Godfrey 2889: 2866: 2806: 2781:Factor analysis 2727: 2708:Graphical model 2680: 2647: 2614: 2600: 2580: 2534: 2501: 2463: 2426: 2425: 2394: 2338: 2325: 2317: 2309: 2293: 2278: 2257:Rank statistics 2251: 2230:Model selection 2218: 2176:Goodness of fit 2170: 2147: 2121: 2093: 2046: 1991: 1980:Median unbiased 1908: 1819: 1752:Order statistic 1714: 1693: 1660: 1634: 1586: 1541: 1484: 1482:Data collection 1463: 1375: 1330: 1304: 1282: 1242: 1194: 1111:Continuous data 1101: 1088: 1070: 1065: 1035: 1030: 1008: 990: 967:Crossover study 958: 956:Latin hypercube 892:Plackett–Burman 871: 868: 867: 859: 762: 754: 695: 687: 604: 597: 592: 557: 538: 452: 434:, 2: 620-625. 432:WIREs Comp Stat 413: 408: 407: 402: 398: 393: 389: 384: 380: 375: 338: 311:"order" effects 297: 243: 184: 106:crossover trial 102:crossover study 90: 79: 73: 70: 60:Please help to 59: 43: 39: 32: 23: 22: 15: 12: 11: 5: 3396: 3386: 3385: 3380: 3375: 3358: 3357: 3355: 3354: 3342: 3330: 3316: 3303: 3300: 3299: 3296: 3295: 3292: 3291: 3289: 3288: 3283: 3278: 3273: 3268: 3262: 3260: 3254: 3253: 3251: 3250: 3245: 3240: 3235: 3230: 3225: 3220: 3215: 3210: 3205: 3199: 3197: 3191: 3190: 3188: 3187: 3182: 3177: 3168: 3163: 3158: 3152: 3150: 3144: 3143: 3141: 3140: 3135: 3130: 3121: 3119:Bioinformatics 3115: 3113: 3103: 3102: 3090: 3089: 3086: 3085: 3082: 3081: 3078: 3077: 3075: 3074: 3068: 3066: 3062: 3061: 3059: 3058: 3052: 3050: 3044: 3043: 3041: 3040: 3035: 3030: 3025: 3019: 3017: 3008: 3002: 3001: 2998: 2997: 2995: 2994: 2989: 2984: 2979: 2974: 2968: 2966: 2960: 2959: 2957: 2956: 2951: 2946: 2938: 2933: 2928: 2927: 2926: 2924:partial (PACF) 2915: 2913: 2907: 2906: 2904: 2903: 2898: 2893: 2885: 2880: 2874: 2872: 2871:Specific tests 2868: 2867: 2865: 2864: 2859: 2854: 2849: 2844: 2839: 2834: 2829: 2823: 2821: 2814: 2808: 2807: 2805: 2804: 2803: 2802: 2801: 2800: 2785: 2784: 2783: 2773: 2771:Classification 2768: 2763: 2758: 2753: 2748: 2743: 2737: 2735: 2729: 2728: 2726: 2725: 2720: 2718:McNemar's test 2715: 2710: 2705: 2700: 2694: 2692: 2682: 2681: 2657: 2656: 2653: 2652: 2649: 2648: 2646: 2645: 2640: 2635: 2630: 2624: 2622: 2616: 2615: 2613: 2612: 2596: 2590: 2588: 2582: 2581: 2579: 2578: 2573: 2568: 2563: 2558: 2556:Semiparametric 2553: 2548: 2542: 2540: 2536: 2535: 2533: 2532: 2527: 2522: 2517: 2511: 2509: 2503: 2502: 2500: 2499: 2494: 2489: 2484: 2479: 2473: 2471: 2465: 2464: 2462: 2461: 2456: 2451: 2446: 2440: 2438: 2428: 2427: 2424: 2423: 2418: 2412: 2404: 2403: 2400: 2399: 2396: 2395: 2393: 2392: 2391: 2390: 2380: 2375: 2370: 2369: 2368: 2363: 2352: 2350: 2344: 2343: 2340: 2339: 2337: 2336: 2331: 2330: 2329: 2321: 2313: 2297: 2294:(Mann–Whitney) 2289: 2288: 2287: 2274: 2273: 2272: 2261: 2259: 2253: 2252: 2250: 2249: 2248: 2247: 2242: 2237: 2227: 2222: 2219:(Shapiro–Wilk) 2214: 2209: 2204: 2199: 2194: 2186: 2180: 2178: 2172: 2171: 2169: 2168: 2160: 2151: 2139: 2133: 2131:Specific tests 2127: 2126: 2123: 2122: 2120: 2119: 2114: 2109: 2103: 2101: 2095: 2094: 2092: 2091: 2086: 2085: 2084: 2074: 2073: 2072: 2062: 2056: 2054: 2048: 2047: 2045: 2044: 2043: 2042: 2037: 2027: 2022: 2017: 2012: 2007: 2001: 1999: 1993: 1992: 1990: 1989: 1984: 1983: 1982: 1977: 1976: 1975: 1970: 1955: 1954: 1953: 1948: 1943: 1938: 1927: 1925: 1916: 1910: 1909: 1907: 1906: 1901: 1896: 1895: 1894: 1884: 1879: 1878: 1877: 1867: 1866: 1865: 1860: 1855: 1845: 1840: 1835: 1834: 1833: 1828: 1823: 1807: 1806: 1805: 1800: 1795: 1785: 1784: 1783: 1778: 1768: 1767: 1766: 1756: 1755: 1754: 1744: 1739: 1734: 1728: 1726: 1716: 1715: 1703: 1702: 1699: 1698: 1695: 1694: 1692: 1691: 1686: 1681: 1676: 1670: 1668: 1662: 1661: 1659: 1658: 1653: 1648: 1642: 1640: 1636: 1635: 1633: 1632: 1627: 1622: 1617: 1612: 1607: 1602: 1596: 1594: 1588: 1587: 1585: 1584: 1582:Standard error 1579: 1574: 1569: 1568: 1567: 1562: 1551: 1549: 1543: 1542: 1540: 1539: 1534: 1529: 1524: 1519: 1514: 1512:Optimal design 1509: 1504: 1498: 1496: 1486: 1485: 1473: 1472: 1469: 1468: 1465: 1464: 1462: 1461: 1456: 1451: 1446: 1441: 1436: 1431: 1426: 1421: 1416: 1411: 1406: 1401: 1396: 1391: 1385: 1383: 1377: 1376: 1374: 1373: 1368: 1367: 1366: 1361: 1351: 1346: 1340: 1338: 1332: 1331: 1329: 1328: 1323: 1318: 1312: 1310: 1309:Summary tables 1306: 1305: 1303: 1302: 1296: 1294: 1288: 1287: 1284: 1283: 1281: 1280: 1279: 1278: 1273: 1268: 1258: 1252: 1250: 1244: 1243: 1241: 1240: 1235: 1230: 1225: 1220: 1215: 1210: 1204: 1202: 1196: 1195: 1193: 1192: 1187: 1182: 1181: 1180: 1175: 1170: 1165: 1160: 1155: 1150: 1145: 1143:Contraharmonic 1140: 1135: 1124: 1122: 1113: 1103: 1102: 1090: 1089: 1087: 1086: 1081: 1075: 1072: 1071: 1064: 1063: 1056: 1049: 1041: 1032: 1031: 1029: 1028: 1023: 1018: 1006: 1001: 995: 992: 991: 989: 988: 983: 978: 970: 969: 964: 953: 948: 943: 938: 932: 924: 923: 918: 913: 908: 900: 899: 894: 889: 884: 876: 874: 861: 860: 858: 857: 852: 846: 845: 833: 821: 816: 808: 807: 799: 794: 786: 785: 780: 775: 769: 767: 756: 755: 753: 752: 747: 742: 735: 730: 725: 720: 715: 710: 702: 700: 689: 688: 686: 685: 680: 675: 670: 665: 660: 653:Optimal design 648: 647: 642: 637: 625: 620: 615: 609: 607: 599: 598: 591: 590: 583: 576: 568: 562: 561: 556:978-0824782481 555: 542: 536: 519: 505: 503:978-0824788926 491: 477: 463: 456: 451:978-0412606403 450: 437: 428: 426:978-9812818423 412: 409: 406: 405: 396: 387: 377: 376: 374: 371: 370: 369: 364: 359: 354: 349: 344: 337: 334: 296: 293: 247:parallel study 242: 239: 212:random effects 183: 180: 148:clinical trial 132:, for example 92: 91: 46: 44: 37: 9: 6: 4: 3: 2: 3395: 3384: 3381: 3379: 3376: 3374: 3371: 3370: 3368: 3353: 3352: 3343: 3341: 3340: 3331: 3329: 3328: 3323: 3317: 3315: 3314: 3305: 3304: 3301: 3287: 3284: 3282: 3281:Geostatistics 3279: 3277: 3274: 3272: 3269: 3267: 3264: 3263: 3261: 3259: 3255: 3249: 3248:Psychometrics 3246: 3244: 3241: 3239: 3236: 3234: 3231: 3229: 3226: 3224: 3221: 3219: 3216: 3214: 3211: 3209: 3206: 3204: 3201: 3200: 3198: 3196: 3192: 3186: 3183: 3181: 3178: 3176: 3172: 3169: 3167: 3164: 3162: 3159: 3157: 3154: 3153: 3151: 3149: 3145: 3139: 3136: 3134: 3131: 3129: 3125: 3122: 3120: 3117: 3116: 3114: 3112: 3111:Biostatistics 3108: 3104: 3100: 3095: 3091: 3073: 3072:Log-rank test 3070: 3069: 3067: 3063: 3057: 3054: 3053: 3051: 3049: 3045: 3039: 3036: 3034: 3031: 3029: 3026: 3024: 3021: 3020: 3018: 3016: 3012: 3009: 3007: 3003: 2993: 2990: 2988: 2985: 2983: 2980: 2978: 2975: 2973: 2970: 2969: 2967: 2965: 2961: 2955: 2952: 2950: 2947: 2945: 2943:(Box–Jenkins) 2939: 2937: 2934: 2932: 2929: 2925: 2922: 2921: 2920: 2917: 2916: 2914: 2912: 2908: 2902: 2899: 2897: 2896:Durbin–Watson 2894: 2892: 2886: 2884: 2881: 2879: 2878:Dickey–Fuller 2876: 2875: 2873: 2869: 2863: 2860: 2858: 2855: 2853: 2852:Cointegration 2850: 2848: 2845: 2843: 2840: 2838: 2835: 2833: 2830: 2828: 2827:Decomposition 2825: 2824: 2822: 2818: 2815: 2813: 2809: 2799: 2796: 2795: 2794: 2791: 2790: 2789: 2786: 2782: 2779: 2778: 2777: 2774: 2772: 2769: 2767: 2764: 2762: 2759: 2757: 2754: 2752: 2749: 2747: 2744: 2742: 2739: 2738: 2736: 2734: 2730: 2724: 2721: 2719: 2716: 2714: 2711: 2709: 2706: 2704: 2701: 2699: 2698:Cohen's kappa 2696: 2695: 2693: 2691: 2687: 2683: 2679: 2675: 2671: 2667: 2662: 2658: 2644: 2641: 2639: 2636: 2634: 2631: 2629: 2626: 2625: 2623: 2621: 2617: 2611: 2607: 2603: 2597: 2595: 2592: 2591: 2589: 2587: 2583: 2577: 2574: 2572: 2569: 2567: 2564: 2562: 2559: 2557: 2554: 2552: 2551:Nonparametric 2549: 2547: 2544: 2543: 2541: 2537: 2531: 2528: 2526: 2523: 2521: 2518: 2516: 2513: 2512: 2510: 2508: 2504: 2498: 2495: 2493: 2490: 2488: 2485: 2483: 2480: 2478: 2475: 2474: 2472: 2470: 2466: 2460: 2457: 2455: 2452: 2450: 2447: 2445: 2442: 2441: 2439: 2437: 2433: 2429: 2422: 2419: 2417: 2414: 2413: 2409: 2405: 2389: 2386: 2385: 2384: 2381: 2379: 2376: 2374: 2371: 2367: 2364: 2362: 2359: 2358: 2357: 2354: 2353: 2351: 2349: 2345: 2335: 2332: 2328: 2322: 2320: 2314: 2312: 2306: 2305: 2304: 2301: 2300:Nonparametric 2298: 2296: 2290: 2286: 2283: 2282: 2281: 2275: 2271: 2270:Sample median 2268: 2267: 2266: 2263: 2262: 2260: 2258: 2254: 2246: 2243: 2241: 2238: 2236: 2233: 2232: 2231: 2228: 2226: 2223: 2221: 2215: 2213: 2210: 2208: 2205: 2203: 2200: 2198: 2195: 2193: 2191: 2187: 2185: 2182: 2181: 2179: 2177: 2173: 2167: 2165: 2161: 2159: 2157: 2152: 2150: 2145: 2141: 2140: 2137: 2134: 2132: 2128: 2118: 2115: 2113: 2110: 2108: 2105: 2104: 2102: 2100: 2096: 2090: 2087: 2083: 2080: 2079: 2078: 2075: 2071: 2068: 2067: 2066: 2063: 2061: 2058: 2057: 2055: 2053: 2049: 2041: 2038: 2036: 2033: 2032: 2031: 2028: 2026: 2023: 2021: 2018: 2016: 2013: 2011: 2008: 2006: 2003: 2002: 2000: 1998: 1994: 1988: 1985: 1981: 1978: 1974: 1971: 1969: 1966: 1965: 1964: 1961: 1960: 1959: 1956: 1952: 1949: 1947: 1944: 1942: 1939: 1937: 1934: 1933: 1932: 1929: 1928: 1926: 1924: 1920: 1917: 1915: 1911: 1905: 1902: 1900: 1897: 1893: 1890: 1889: 1888: 1885: 1883: 1880: 1876: 1875:loss function 1873: 1872: 1871: 1868: 1864: 1861: 1859: 1856: 1854: 1851: 1850: 1849: 1846: 1844: 1841: 1839: 1836: 1832: 1829: 1827: 1824: 1822: 1816: 1813: 1812: 1811: 1808: 1804: 1801: 1799: 1796: 1794: 1791: 1790: 1789: 1786: 1782: 1779: 1777: 1774: 1773: 1772: 1769: 1765: 1762: 1761: 1760: 1757: 1753: 1750: 1749: 1748: 1745: 1743: 1740: 1738: 1735: 1733: 1730: 1729: 1727: 1725: 1721: 1717: 1713: 1708: 1704: 1690: 1687: 1685: 1682: 1680: 1677: 1675: 1672: 1671: 1669: 1667: 1663: 1657: 1654: 1652: 1649: 1647: 1644: 1643: 1641: 1637: 1631: 1628: 1626: 1623: 1621: 1618: 1616: 1613: 1611: 1608: 1606: 1603: 1601: 1598: 1597: 1595: 1593: 1589: 1583: 1580: 1578: 1577:Questionnaire 1575: 1573: 1570: 1566: 1563: 1561: 1558: 1557: 1556: 1553: 1552: 1550: 1548: 1544: 1538: 1535: 1533: 1530: 1528: 1525: 1523: 1520: 1518: 1515: 1513: 1510: 1508: 1505: 1503: 1500: 1499: 1497: 1495: 1491: 1487: 1483: 1478: 1474: 1460: 1457: 1455: 1452: 1450: 1447: 1445: 1442: 1440: 1437: 1435: 1432: 1430: 1427: 1425: 1422: 1420: 1417: 1415: 1412: 1410: 1407: 1405: 1404:Control chart 1402: 1400: 1397: 1395: 1392: 1390: 1387: 1386: 1384: 1382: 1378: 1372: 1369: 1365: 1362: 1360: 1357: 1356: 1355: 1352: 1350: 1347: 1345: 1342: 1341: 1339: 1337: 1333: 1327: 1324: 1322: 1319: 1317: 1314: 1313: 1311: 1307: 1301: 1298: 1297: 1295: 1293: 1289: 1277: 1274: 1272: 1269: 1267: 1264: 1263: 1262: 1259: 1257: 1254: 1253: 1251: 1249: 1245: 1239: 1236: 1234: 1231: 1229: 1226: 1224: 1221: 1219: 1216: 1214: 1211: 1209: 1206: 1205: 1203: 1201: 1197: 1191: 1188: 1186: 1183: 1179: 1176: 1174: 1171: 1169: 1166: 1164: 1161: 1159: 1156: 1154: 1151: 1149: 1146: 1144: 1141: 1139: 1136: 1134: 1131: 1130: 1129: 1126: 1125: 1123: 1121: 1117: 1114: 1112: 1108: 1104: 1100: 1095: 1091: 1085: 1082: 1080: 1077: 1076: 1073: 1069: 1062: 1057: 1055: 1050: 1048: 1043: 1042: 1039: 1027: 1024: 1022: 1019: 1017: 1012: 1007: 1005: 1002: 1000: 997: 996: 993: 987: 984: 982: 979: 977: 976: 972: 971: 968: 965: 963: 962: 957: 954: 952: 949: 947: 944: 942: 939: 936: 933: 931: 930: 926: 925: 922: 919: 917: 914: 912: 909: 907: 906: 902: 901: 898: 895: 893: 890: 888: 885: 883: 882: 878: 877: 875: 873: 866: 862: 856: 853: 851: 850:Compare means 848: 847: 844: 842: 838: 834: 832: 830: 826: 822: 820: 817: 815: 814: 810: 809: 806: 803: 800: 798: 795: 793: 792: 791:Random effect 788: 787: 784: 781: 779: 776: 774: 771: 770: 768: 766: 761: 757: 751: 748: 746: 743: 741: 740: 736: 734: 733:Orthogonality 731: 729: 726: 724: 721: 719: 716: 714: 711: 709: 708: 704: 703: 701: 699: 694: 690: 684: 681: 679: 676: 674: 671: 669: 668:Randomization 666: 664: 661: 659: 655: 654: 650: 649: 646: 643: 641: 638: 636: 633: 629: 626: 624: 621: 619: 616: 614: 611: 610: 608: 606: 600: 596: 589: 584: 582: 577: 575: 570: 569: 566: 558: 552: 548: 543: 539: 533: 529: 525: 520: 518: 514: 510: 506: 504: 500: 496: 492: 490: 486: 482: 478: 476: 475:0-19-262992-1 472: 468: 464: 461: 457: 453: 447: 443: 438: 436: 433: 429: 427: 423: 419: 415: 414: 400: 391: 382: 378: 368: 365: 363: 360: 358: 355: 353: 350: 348: 345: 343: 340: 339: 333: 331: 327: 323: 319: 314: 312: 307: 304: 302: 292: 288: 286: 282: 277: 275: 271: 267: 263: 259: 256: 252: 248: 238: 236: 232: 228: 224: 220: 215: 213: 210:that include 209: 205: 201: 197: 193: 189: 179: 175: 171: 169: 165: 161: 157: 153: 149: 145: 141: 139: 135: 131: 127: 123: 119: 115: 111: 107: 103: 99: 88: 85: 77: 67: 63: 57: 56: 50: 45: 36: 35: 30: 19: 3349: 3337: 3318: 3311: 3223:Econometrics 3173: / 3156:Chemometrics 3133:Epidemiology 3126: / 3099:Applications 2941:ARIMA model 2888:Q-statistic 2837:Stationarity 2733:Multivariate 2676: / 2672: / 2670:Multivariate 2668: / 2608: / 2604: / 2378:Bayes factor 2277:Signed rank 2189: 2163: 2155: 2143: 1838:Completeness 1674:Cohort study 1572:Opinion poll 1507:Missing data 1494:Study design 1449:Scatter plot 1371:Scatter plot 1364:Spearman's ρ 1326:Grouped data 973: 966: 959: 941:Latin square 927: 903: 879: 840: 836: 829:multivariate 828: 824: 811: 789: 737: 705: 651: 546: 527: 508: 494: 480: 466: 459: 441: 431: 417: 399: 390: 381: 362:N of 1 trial 315: 308: 305: 298: 289: 278: 244: 227:missing-data 216: 208:mixed models 185: 176: 172: 142: 105: 101: 95: 80: 71: 52: 3351:WikiProject 3266:Cartography 3228:Jurimetrics 3180:Reliability 2911:Time domain 2890:(Ljung–Box) 2812:Time-series 2690:Categorical 2674:Time-series 2666:Categorical 2601:(Bernoulli) 2436:Correlation 2416:Correlation 2212:Jarque–Bera 2184:Chi-squared 1946:M-estimator 1899:Asymptotics 1843:Sufficiency 1610:Interaction 1522:Replication 1502:Effect size 1459:Violin plot 1439:Radar chart 1419:Forest plot 1409:Correlogram 1359:Kendall's τ 916:Box–Behnken 797:Mixed model 728:Confounding 723:Interaction 713:Effect size 683:Sample size 255:confounding 66:introducing 3367:Categories 3218:Demography 2936:ARMA model 2741:Regression 2318:(Friedman) 2279:(Wilcoxon) 2217:Normality 2207:Lilliefors 2154:Student's 2030:Resampling 1904:Robustness 1892:divergence 1882:Efficiency 1820:(monotone) 1815:Likelihood 1732:Population 1565:Stratified 1517:Population 1336:Dependence 1292:Count data 1223:Percentile 1200:Dispersion 1133:Arithmetic 1068:Statistics 872:randomized 870:Completely 841:covariance 603:Scientific 524:Rao, C. R. 411:References 270:randomized 266:unbalanced 258:covariates 241:Advantages 144:Randomized 134:psychology 118:treatments 74:April 2013 49:references 2599:Logistic 2366:posterior 2292:Rank sum 2040:Jackknife 2035:Bootstrap 1853:Bootstrap 1788:Parameter 1737:Statistic 1532:Statistic 1444:Run chart 1429:Pie chart 1424:Histogram 1414:Fan chart 1389:Bar chart 1271:L-moments 1158:Geometric 881:Factorial 765:inference 745:Covariate 707:Treatment 693:Treatment 322:estimates 318:confounds 231:censoring 112:in which 3313:Category 3006:Survival 2883:Johansen 2606:Binomial 2561:Isotonic 2148:(normal) 1793:location 1600:Blocking 1555:Sampling 1434:Q–Q plot 1399:Box plot 1381:Graphics 1276:Skewness 1266:Kurtosis 1238:Variance 1168:Heronian 1163:Harmonic 1004:Category 999:Glossary 805:Bayesian 783:Bayesian 739:Blocking 718:Contrast 698:blocking 658:Bayesian 645:Blinding 635:validity 632:external 628:Internal 526:(eds.). 483:Wiley. 462:. Wiley. 336:See also 330:dynamics 279:Second, 219:patients 182:Analysis 114:subjects 98:medicine 3339:Commons 3286:Kriging 3171:Process 3128:studies 2987:Wavelet 2820:General 1987:Plug-in 1781:L space 1560:Cluster 1261:Moments 1079:Outline 897:Taguchi 865:Designs 623:Control 324:of the 281:optimal 262:control 168:placebo 160:patient 62:improve 3208:Census 2798:Normal 2746:Manova 2566:Robust 2316:2-way 2308:1-way 2146:-test 1817:  1394:Biplot 1185:Median 1178:Lehmer 1120:Center 937:(GRBD) 837:Ancova 825:Manova 760:Models 605:method 553:  534:  515:  501:  487:  473:  448:  424:  51:, but 2832:Trend 2361:prior 2303:anova 2192:-test 2166:-test 2158:-test 2065:Power 2010:Pivot 1803:shape 1798:scale 1248:Shape 1228:Range 1173:Heinz 1148:Cubic 1084:Index 929:Block 373:Notes 229:and " 206:) or 166:or a 108:is a 3065:Test 2265:Sign 2117:Wald 1190:Mode 1128:Mean 763:and 696:and 630:and 551:ISBN 532:ISBN 513:ISBN 499:ISBN 485:ISBN 471:ISBN 446:ISBN 422:ISBN 320:the 198:and 100:, a 2245:BIC 2240:AIC 104:or 96:In 3369:: 656:: 237:. 214:. 170:. 136:, 2190:G 2164:F 2156:t 2144:Z 1863:V 1858:U 1060:e 1053:t 1046:v 843:) 839:( 831:) 827:( 587:e 580:t 573:v 559:. 540:. 454:. 87:) 81:( 76:) 72:( 58:. 31:. 20:)

Index

Crossover studies
crossover experiment (chemistry)
references
inline citations
improve
introducing
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medicine
longitudinal study
subjects
treatments
observational studies
controlled experiments
scientific disciplines
psychology
pharmaceutical science
Randomized
clinical trial
randomly assigned
repeated measures design
patient
standard treatment
placebo
statistical method
clinical trial protocol
institutional review boards
regulatory agencies
analysis of variance
mixed models
random effects

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