Table 2.

Meta-regression of bone mineral density differences between schizophrenia and control participants

Moderator	Number studies estimates	β	95 % CI		P value	R 2
Lumbar Spine BMD results
Mean age	14	−0.0019	−0.0368	0.0331	0.9173	0
% females	14	0.0029	−0.0059	0.0117	0.5224	0.03
% taking antipsychotic medication	9	−0.0062	−0.0182	0.0058	0.3085	0.09
Serum prolactin	7	−0.0077	−0.0175	0.0022	0.1268	0.31
% people schizophrenia hyperprolactinaemia	7	−0.0102	−0.0135	−0.0068	<0.0001	1.0
Body mass index	11	−0.0148	−0.103	0.0734	0.7423	0.01
% people schizophrenia who smoke	6	−0.0099	−0.0185	−0.0012	0.0253	0.61
Control mean age	14	−0.0043	−0.0404	0.0318	0.815	0.01
Control % female	14	−0.0006	−0.0124	0.0112	0.9259	0
Hip BMD results
Mean age	7	−0.0253	−0.0426	−0.008	0.0041	0.71
% female	7	0.0039	−0.0027	0.0105	0.251	0.21
% taking antipsychotic medication	7	−0.04	−0.1329	0.0529	0.3983	0.11
Body mass index	6	−0.0107	−0.1429	0.1215	0.8739	0

Italic indicates statistically significant result