The NHANESraw dataset from the NHANES package in R contains survey results from many years. To obtain a baseline observation for an individual from the 2011-12 survey, we have:

# If the packages are not installed, we have the following. # install.packages("tidyverse") install.packages("survey") install.packages("NHANES") # The following are the packages that are needed. # library(tidyverse) library(survey) library(NHANES) # This will provide the baseline observations from the 2011-12 survey. # small.nhanes <- na.omit(NHANESraw[NHANESraw$SurveyYr == "2011_12" & NHANESraw$Age > 17, c(1, 3, 4, 8:11, 13, 24, 61, 77)]) small.nhanes <- small.nhanes %>% group_by(ID) %>% filter(row_number() == 1) small.nhanes 

This will result in 4581 observations from the 2011-12 survey with 11 columns. Calculate the stratum-specific sample size n_j : j = 1, 2, . . . , 14 and the overall sample size n.

Please note the following.

• This is a sample from a larger dataset, but we'll use this data as a population instead
• SDMVSTRA are the strata and there are 14 strata here