ageRatioTest {nipnTK}

Age ratio test

Description

Age ratio test is an age-related test of survey and data quality. In this test, the ratio of the number of children aged from 6 to 29 months to the number of children aged from 30 to 59 months is calculated. This ratio is then compared to an expected ratio (usually set at 0.85). The difference of the observed ratio to the expected ratio is then compared statistically using Chi-squared test.

Usage

ageRatioTest(x, ratio = 0.85)

Arguments

x

A vector of ages. Should either be in whole months (integer) or in calculated decimal months (numeric).

ratio

Expected age ratio. Default is 0.85.

Value

A lit of class "ageRatioTest" with:

Variable	Description
expectedR	Expected sex ratio
expectedP	Expected proportion aged 6:29 months
observedR	Observed sex ratio
observedP	Observed proportion aged 6:29 months
X2	Chi-squared test statistic
df	Degrees of freedom for Chi-squared test
p	p-value for Chi-squared test

Examples

# Age-ratio test on survey dataset from Kabul, Afghanistan (`dp.ex02`)
# with an age ratio of 0.85
svy <- dp.ex02
ageRatioTest(svy$age, ratio = 0.85)

# The age ratio test applied to data for each sex separately
by(svy$age, svy$sex, ageRatioTest, ratio = 0.85)