svyPVttest:
Computation of a t-test for data from a complex survey design with usage of plausible values
Description
Computes a one-sample or two-sample t-test for data from a complex survey design with usage of plausible values.
Usage
svyPVttest(formula, design, placeholder = 1:10)
Arguments
formula
Formula, outcome~group for two-sample, outcome~0 or outcome~1 for one-sample (all variables have to be part of a survey design objecct created by the survey package). For a notation description for the plausible values see in 'details'.
design
a survey design which was generated by the survey package.
placeholder
a vector of symbols, which were used for numbering the plausible values. For a detailed description see in 'details'.
Value
DESC
Shows mean and SE for each group.
TEST
Shows the test statistic (t.value, degf and Pr.t).
N
Shows the unweighted number of cases and the sum of weights (NA's excluded) within each group.
Details
All variables mentioned in the formula object must be part of the survey design object. Instead of the symbols, which were used for numbering the plausible values use '..' as notation (e.g. placeholder = 1:5 and PVLIT.. stands for PVLIT1, PVLIT2, PVLIT3, PVLIT4, PVLIT5). Missing values are deleted listwise.
References
Lumley, T. (2010). Complex Surveys. Hoboken, NJ: Wiley.
Saerndal, C.-E. & Swensson, B. & Wretman, J. (1992). Model Assisted Survey Sampling. New York: Springer.
Chaudhuri, A. & Stenger, H. (2005). Survey Sampling. Theory and Methods. Boka Raton, FL: Chapman & Hall/CRC.
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