st: temporal trend in a complex survey

[paola.dalmasso@unito.it]

hi all,
i have to analyze temporal trend in obesity prevalence in a survey 
repeated 3 times. i set psu,strata and weights and with svy linearized i 
estimated prevalence but i dont know how to analyze trend significance. 
I think i have to use a linear by linear chi square but i dont find it 
in svy setting.. anyone could help me or suggest other test? thanks



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