46:. For example, moving up from 40 percent to 44 percent is an increase of 4 percentage points (although it is a 10-percent increase in the quantity being measured, if the total amount remains the same). In written text, the unit (the percentage point) is usually either written out, or abbreviated as
82:. Consider a drug that cures a given disease in 70 percent of all cases, while without the drug, the disease heals spontaneously in only 50 percent of cases. The drug reduces absolute risk by 20 percentage points. Alternatives may be more meaningful to consumers of statistics, such as the
90:(NNT). In this case, the reciprocal transform of the percentage-point difference would be 1/(20pp) = 1/0.20 = 5. Thus if 5 patients are treated with the drug, one could expect to cure one more patient than would have gotten well without receiving the treatment.
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Consider the following hypothetical example: In 1980, 50 percent of the population smoked, and in 1990 only 40 percent of the population smoked. One can thus say that from 1980 to 1990, the prevalence of smoking decreased by 10
117:, the result should be expressed in units of percentage points instead of percentage. Mistakenly using percentage as the unit for the standard deviation is confusing, since percentage is also used as a unit for the
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to avoid confusion with percentage increase or decrease in the actual quantity. After the first occurrence, some writers abbreviate by using just "point" or "points".
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when talking about smokers only – percentages indicate proportionate part of a total.
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For measurements involving percentages as a unit, such as, growth,
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Contemporary
Mathematics for Business and Consumers, Brief Edition
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Percentage-point differences are one way to express a risk or
19:"Percent point" redirects here. Not to be confused with
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Differences between percentages and percentage points
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Unit for the arithmetic difference of two percentages
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71:(or by 10 percent of the population) or by
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155:(bp) difference of 1 part in 10,000
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219:. Cengage Learning. p. 190.
272:from the original on 18 May 2015
258:. Cengage Learning. p. 30.
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194:Relative change and difference
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119:relative standard deviation
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255:Math Tools for Journalists
252:Wickham, Kathleen (2003).
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213:Brechner, Robert (2008).
298:Mathematical terminology
123:coefficient of variation
163:(pcm) 1 part in 100,000
303:Probability assessment
184:Percent point function
115:root-mean-square error
107:descriptive statistics
103:statistical deviations
88:number needed to treat
21:Percent point function
149:(‱) 1 part in 10,000
40:arithmetic difference
308:Units of measurement
86:, also known as the
143:(‰) 1 part in 1,000
179:Parts-per notation
111:standard deviation
137:(%) 1 part in 100
99:ejection fraction
69:percentage points
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274:. Retrieved
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42:between two
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153:Basis point
80:probability
44:percentages
292:Categories
200:References
135:Percentage
84:reciprocal
73:20 percent
147:Permyriad
141:Per mille
270:Archived
231:Archived
168:See also
38:for the
34:is the
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276:7 May
237:7 May
97:, or
95:yield
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278:2015
260:ISBN
239:2015
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