| Svy command [message #4369] |
Fri, 15 May 2015 04:09  |
erimgina@yahoo.com
Messages: 3
Registered: April 2015
Location: China
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Dear all
I am planning to use DHS 2010 data to investigate the relationship between family planning use and increased weight among women using modern methods of family planning, I getting difficult to use svy command in stata, I have read the user mannual and written the command as follows
gen psu= v021
gen wght=v005/1000000
egen strata = group(v022 v023), label
svyset psu [pweight=wght], strata(strata)
svy: mean age
The results that I get is missing some information as shown in the table below, the same problem occur when I do regression analysis
svy: mean age
(running mean on estimation sample)
Survey: Mean estimation
Number of strata = 51 Number of obs = 10139
Number of PSUs = 475 Population size = 10139
Design df = 424
------------------------------------------------------------ --
| Linearized
| Mean Std. Err. [95% Conf. Interval]
-------------+---------------------------------------------- --
age | 28.57465 . . .
------------------------------------------------------------ --
Note: missing standard error because of stratum with single
sampling unit.
Please any help!
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