Hello all.
Why is there difference in the confidence limits reported by the two commands please?
Why is there difference in the confidence limits reported by the two commands please?
Code:
* Example generated by -dataex-. To install: ssc install dataex clear input byte(cancer sex exsmok) float bmi2 byte age1 0 0 2 1 1 1 0 4 2 3 0 0 4 1 3 1 0 4 2 3 0 0 1 2 3 1 0 4 1 2 0 0 1 2 3 0 0 4 1 2 1 0 4 4 3 1 0 3 1 3 1 0 1 4 2 0 0 4 2 3 1 0 1 2 3 0 0 1 2 2 0 0 4 1 2 0 0 3 1 1 0 0 4 1 2 0 1 4 4 2 0 1 4 2 3 0 1 3 1 2 0 1 3 4 3 0 1 3 2 3 1 1 3 1 2 0 1 3 1 3 0 1 1 1 3 0 1 1 2 3 0 1 2 2 2 0 1 4 2 2 0 1 4 1 3 0 1 4 1 1 1 1 1 1 3 1 1 1 5 3 0 1 4 1 2 1 1 4 3 2 1 1 3 2 2 end label values sex sex label def sex 0 "Male" 1 "Female", modify
Code:
. tab cancer sex | sex cancer | Male Female | Total -----------+----------------------+---------- 0 | 10 13 | 23 1 | 7 5 | 12 -----------+----------------------+---------- Total | 17 18 | 35 . cii 17 7, binomial -- Binomial Exact -- Variable | Obs Mean Std. Err. [95% Conf. Interval] -------------+--------------------------------------------------------------- | 17 .4117647 .1193646 .184437 .6707528 . cii 18 5, binomial -- Binomial Exact -- Variable | Obs Mean Std. Err. [95% Conf. Interval] -------------+--------------------------------------------------------------- | 18 .2777778 .1055718 .0969492 .534802 . proportion cancer, over(sex) citype(normal) Proportion estimation Number of obs = 35 _prop_1: cancer = 0 _prop_2: cancer = 1 Male: sex = Male Female: sex = Female -------------------------------------------------------------- Over | Proportion Std. Err. [95% Conf. Interval] -------------+------------------------------------------------ _prop_1 | Male | .5882353 .1230382 .3381915 .8382791 Female | .7222222 .1086325 .5014545 .94299 -------------+------------------------------------------------ _prop_2 | Male | .4117647 .1230382 .1617209 .6618085 Female | .2777778 .1086325 .05701 .4985455 -------------------------------------------------------------- . proportion cancer, over(sex) citype(logit) Proportion estimation Number of obs = 35 _prop_1: cancer = 0 _prop_2: cancer = 1 Male: sex = Male Female: sex = Female -------------------------------------------------------------- Over | Proportion Std. Err. [95% Conf. Interval] -------------+------------------------------------------------ _prop_1 | Male | .5882353 .1230382 .3372332 .8004323 Female | .7222222 .1086325 .4638305 .8865478 -------------+------------------------------------------------ _prop_2 | Male | .4117647 .1230382 .1995677 .6627668 Female | .2777778 .1086325 .1134522 .5361695 --------------------------------------------------------------
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