Table 3.

Comparisons of mean (sd) chlorpromazine-equivalent daily dosages (in mg) of antipsychotic medication between the intervention and control groups^a at baseline and at the 30-month follow-up

	Intervention group (n=103)		Control group (n=98)	t	p
	daily dose in mg mean (sd)		daily dose in mg mean (sd)
baseline	184 (27)		192 (31)	1.34	0.181
follow-upb	203 (28)		187 (30)	3.91	0.001

^aBefore and after comparison of the intervention group, paired-t=4.15, p<0.001; before and after comparison of the control group, paired-t=0.66, p=0.255; for the overall repeated measures analysis of variance F=9.54, p=0.002

^bThis was an intention-to-treat analysis; the last observed value (i.e., the value at baseline) was carried forward and used as the 30-month follow-up value for the 4 subjects who dropped out of the intervention group and for three subjects who dropped out of the control group