TABLE 2.

Differences in demographics between the three groups.

	LG (n = 415) mean (SD)	MG (n = 1,043) mean (SD)	HG (n = 569) mean (SD)	P	Post-hoc
Age (years)	45.3 (15.3)	46.5 (15.4)	44.5 (14.7)	0.032a
Gender (% Female)	55.7%	53.3%	55.5%	0.59b
CPZeq (mg/day)	599.9 (391.8)	689.5 (442.4)	733.5 (490.6)	1.9 × 10–15a	LG < MG = HG
Antipsychotic monotherapy (%)	70.8%	53.3%	49.9%	1.3 × 10–11b	LG < MG = HG
Benzodiazepines(%)	53.7%	71.2%	71.5%	1.8 × 10–10b	LG < MG < HG
Antidepressant (%)	7.5%	8.9%	8.4%	0.67b
Mood stabilizer (%)	31.6%	37.6%	34.8%	0.087b

One-way analysis of variance (ANOVA) and Fischer’s exact test were used to make comparisons among the LG, MG, and HG with post-hoc Bonferroni.

CPZ-eq, chlorpromazine equivalent; LG, low rate group; MG, medium rate group; HG, high rate group.

^aReports F-value.

^bReports χ2-statistic.