Table II. Logistic regression predicting tardive dyskinesia including background, clinical, and genetic variables. PANSS, Positive and Negative Syndrome Scale; CI, confidence interval. *102TT genotype is reference category. Significant values highlighted in bold font.

Variable	β	SE	Wald	df	P	Odds ratio	95.0% CI
							Lower	Upper
Background variables
Age	0.04	0.02	3.93	1	0.047	1.04	1.00	1.08
Sex	0.20	0.49	0.16	1	0.686	1.22	0.47	3015
Cigarette-smoking	0.14	0.46	0.09	1	0.766	1.15	0.47	2.83
Clinical variables
PANSS total score	0.02	0.01	6.00	1	0.014	1.02	1.00	1.03
Age at first antipsychotic treatment	0.05	0.03	2.37	1	0.124	1.05	0.99	1.11
Genetic variables
DRDS gly9 allele	1.48	0.54	7.61	1	0.006	439	1.54	12.56
HTR2A 102C genotype			8.80	2	0.012
HTR2A 102CC genotype*	1.43	0.63	5.20	1	0.023	4.18	1.22	14.26
HTR2A 1027TC genotype*	-020	0.54	0.14	1	0.71	0.82	0.28	2.37
MNSOD ala9 allele	-0.39	0.51	0.58	1	0.445	0.68	0.25	1.83
HTR2A ser23 allele	-0.94	0.53	3.13	1	0.077	0.39	0.14	1 11
Constant	-5.61	1.53	13.41	1	0	0