Colleagues,
I'm using observational data to estimate the effect of using nicotine products for smoking cessation. The results from teffects ipwra (logit outcome model) include covariate coefficients ranging from -0.39 to 1.27. The POMeans look like percentages of successful outcome with vs without treatment. Can someone help me interpret the covariate estimates? Here's the output, thanks for any insights.
Arnold Levinson
teffects ipwra (quittera male cpd homerule menthola i.educ, logit) (nrta male cpd menthola yrssmoked i.educ) if nrtyrs==1, pomeans aequations
Iteration 0: EE criterion = 2.276e-16
Iteration 1: EE criterion = 6.682e-29
Treatment-effects estimation Number of obs = 21,644
Estimator : IPW regression adjustment
Outcome model : logit
Treatment model: logit
Robust
quittera Coef. Std. Err. z P>z [95% Conf. Interval]
POmeans
nrta
0 .2038878 .0038458 53.02 0.000 .1963501 .2114254
1 .1279552 .0052785 24.24 0.000 .1176096 .1383009
OME0
male -.253394 .0507093 -5.00 0.000 -.3527824 -.1540056
cpd .0250312 .003187 7.85 0.000 .0187848 .0312775
homerule 1.199135 .0542777 22.09 0.000 1.092753 1.305518
menthola -.367462 .0564422 -6.51 0.000 -.4780867 -.2568373
educ
HS degree .0443634 .0777641 0.57 0.568 -.1080515 .1967783
>HS, <Bachelor's .2127049 .0790633 2.69 0.007 .0577438 .367666
College grad + .5929854 .090972 6.52 0.000 .4146835 .7712873
_cons -2.381415 .0956683 -24.89 0.000 -2.568921 -2.193908
OME1
male -.1397898 .100357 -1.39 0.164 -.3364859 .0569064
cpd .0472316 .0061048 7.74 0.000 .0352664 .0591968
homerule 1.275523 .1132186 11.27 0.000 1.053619 1.497428
menthola -.3911244 .1204978 -3.25 0.001 -.6272958 -.154953
educ
HS degree .1089667 .1795012 0.61 0.544 -.2428492 .4607827
>HS, <Bachelor's .3240057 .1804704 1.80 0.073 -.0297097 .6777211
College grad + .7036852 .1943961 3.62 0.000 .3226759 1.084694
_cons -3.511067 .2377159 -14.77 0.000 -3.976982 -3.045152
TME1
male -.1747228 .0387394 -4.51 0.000 -.2506506 -.0987949
cpd .0356449 .0022244 16.02 0.000 .0312851 .0400047
menthola -.091971 .0422447 -2.18 0.029 -.174769 -.009173
yrssmoked .0160727 .0012951 12.41 0.000 .0135344 .0186109
educ
HS degree .1672209 .0608008 2.75 0.006 .0480534 .2863883
>HS, <Bachelor's .3764316 .0620206 6.07 0.000 .2548734 .4979898
College grad + .594602 .0722482 8.23 0.000 .4529982 .7362058
_cons -2.212867 .0738227 -29.98 0.000 -2.357557 -2.068177
I'm using observational data to estimate the effect of using nicotine products for smoking cessation. The results from teffects ipwra (logit outcome model) include covariate coefficients ranging from -0.39 to 1.27. The POMeans look like percentages of successful outcome with vs without treatment. Can someone help me interpret the covariate estimates? Here's the output, thanks for any insights.
Arnold Levinson
teffects ipwra (quittera male cpd homerule menthola i.educ, logit) (nrta male cpd menthola yrssmoked i.educ) if nrtyrs==1, pomeans aequations
Iteration 0: EE criterion = 2.276e-16
Iteration 1: EE criterion = 6.682e-29
Treatment-effects estimation Number of obs = 21,644
Estimator : IPW regression adjustment
Outcome model : logit
Treatment model: logit
Robust
quittera Coef. Std. Err. z P>z [95% Conf. Interval]
POmeans
nrta
0 .2038878 .0038458 53.02 0.000 .1963501 .2114254
1 .1279552 .0052785 24.24 0.000 .1176096 .1383009
OME0
male -.253394 .0507093 -5.00 0.000 -.3527824 -.1540056
cpd .0250312 .003187 7.85 0.000 .0187848 .0312775
homerule 1.199135 .0542777 22.09 0.000 1.092753 1.305518
menthola -.367462 .0564422 -6.51 0.000 -.4780867 -.2568373
educ
HS degree .0443634 .0777641 0.57 0.568 -.1080515 .1967783
>HS, <Bachelor's .2127049 .0790633 2.69 0.007 .0577438 .367666
College grad + .5929854 .090972 6.52 0.000 .4146835 .7712873
_cons -2.381415 .0956683 -24.89 0.000 -2.568921 -2.193908
OME1
male -.1397898 .100357 -1.39 0.164 -.3364859 .0569064
cpd .0472316 .0061048 7.74 0.000 .0352664 .0591968
homerule 1.275523 .1132186 11.27 0.000 1.053619 1.497428
menthola -.3911244 .1204978 -3.25 0.001 -.6272958 -.154953
educ
HS degree .1089667 .1795012 0.61 0.544 -.2428492 .4607827
>HS, <Bachelor's .3240057 .1804704 1.80 0.073 -.0297097 .6777211
College grad + .7036852 .1943961 3.62 0.000 .3226759 1.084694
_cons -3.511067 .2377159 -14.77 0.000 -3.976982 -3.045152
TME1
male -.1747228 .0387394 -4.51 0.000 -.2506506 -.0987949
cpd .0356449 .0022244 16.02 0.000 .0312851 .0400047
menthola -.091971 .0422447 -2.18 0.029 -.174769 -.009173
yrssmoked .0160727 .0012951 12.41 0.000 .0135344 .0186109
educ
HS degree .1672209 .0608008 2.75 0.006 .0480534 .2863883
>HS, <Bachelor's .3764316 .0620206 6.07 0.000 .2548734 .4979898
College grad + .594602 .0722482 8.23 0.000 .4529982 .7362058
_cons -2.212867 .0738227 -29.98 0.000 -2.357557 -2.068177
