Table 4.

Mean doses of antipsychotic (AP) drugs for chronic patients in 1996 and 1999.

		1996 (n = 634)			1999 (n = 846)
95% CI**	Mean	Median	Range	Mean	Median	Range	*Statistical values	95% CI**
AP (CPZeq mg)	923 ± 809	700	25–4450	675 ± 545	550	10–3000	Z = −5.036, P = 0.000	175.6, 321.6

^*Mann–Whitney U-test

^**confidence interval.