Dear all,
I'm using a survey data and wonder how can I perform a comparison between median in the sample and in the population. Medians were separately obtained using -pctile- or -_pctile-.
. pctile pctGH = o4gh [pw=o1wtarea], nq(4) genp(percent)
. list percent pct in 1/4
+-----------------+
| percent pctGH |
|-----------------|
1. | 25 50 |
2. | 50 67 |
3. | 75 77 |
4. | . . |
+-----------------+
. pctile pctileGH1 = o4gh if dmstat==1 [pw=o1wtarea], nq(4) genp(pctGH1)
. list pctGH1 pctileGH1 in 1/4
+------------------+
| pctGH1 pctileGH1 |
|------------------|
1. | 25 40 |
2. | 50 60 |
3. | 75 72 |
4. | . . |
+------------------+
Should I calculate the difference between each value in the sample and population first and carry out a sign test then? If so, how is sampling weight taken into account? (I mean, can I use weighted median in the population to substract each 'unweighted' value?)
Secondly, is it possible to perform one-way ANOVA with sampling weight, particularly for post-hoc comparison? Using svy: regress did not give enough information.
Any help is much appreciated.
thanks,
hafida--
Nur Hafidha Hikmayani
School of Medicine & Public Health
The University of Newcastle
Australia
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