Cycle 6

 Variance Estimation

Each of the pdf files below provides programs and output in SAS, SUDAAN, STATA, and WesVar for nine examples of variance estimation. These examples are intended to cover many of the common types of variance estimation you may do in your analyses. If you have any questions about any of these examples, please e-mail the NSFG staff at nsfg@cdc.gov.

Variance Estimation for:

Example 1. Percent of women using the oral contraceptive pill by age
View/download PDF 753 KB

Example 2. Total number of women using the oral contraceptive pill by age
View/download PDF 346 KB

Example 3. Mean numbers of children ever born (PARITY), by race and Hispanic origin for women 20-44 years of age
View/download PDF 332 KB

Example 4. Linear regression of PARITY on age, race and Hispanic origin, and education for women 20-44 years of age
View/download PDF 419 KB

Example 5. Percent distribution of pregnancies by wantedness status, by race and Hispanic origin, and age at pregnancy outcome
View/download PDF 544 KB

Example 6. Percent of male and female teenagers 15-19 years of age who have ever had sex, by gender and race and Hispanic origin (combined male/female files)
View/download PDF 227 KB

Example 7. Percent of males 20-44 years of age who have ever fathered a child, by race and Hispanic origin
View/download PDF 247 KB

Example 8. Percent of males and females who strongly agree that "a young couple should not live together unless they are married" by gender and age (combined male/female files)
View/download PDF 290 KB

Example 9. Logistic regression for the probability of strongly agreeing that "a young couple should not live together unless they are married" by age, gender, race and  Hispanic origin, and education (combined male/female files)
View/download PDF 445 KB