Table 1

Patient and disease characteristics

Characteristic
Study 1 (n = 339)
Study 2 (n = 346)
Study 3 (n = 548)
Study 4 (n = 394)
Total (N = 1627)

Age (mean ± SD)
36.21 ± 10.73
41.05 ± 9.58
39.10 ± 11.8
41.59 ± 9.74
39.53 ± 10.85
Sex (Male %)
220(64.9)
228(65.9)
352(64.2)
248(62.9)
1048(64.4)
Race (Caucasian %)
253(74.6)
179(51.7)
239(43.6)
197(50.0)
868(53.3)
Diagnosis (%)





     Schizophrenia
277(81.7)
230(66.5)
548(100)
223(56.6)
1278(78.5)
     Schizoaffective
52(15.3)
116(33.5)
--
171(43.4)
339(20.84)
     Schizophreniform
10(2.9)
--
--
--
10(0.6)
Age of Onset Illness (yrs ± SD)
23.51 ± 7.48
23.36 ± 8.21
23.37 ± 8.27
23.71 ± 8.93
23.48 ± 8.26
PANSS Total (mean ± SD)
96.08 ± 16.55
84.83 ± 14.03
100.9 ± 20.18
79.35 ± 17.51
91.27 ± 19.72
Prior Hospitalization (%)
337(99.4)
180(52.0)
105(19.2)
189(48.0)
811(49.8)
Hospitalization Days (mean ± SD)*
23.12 ± 43.89
55.45 ± 77.13
16.10 ± 37.4
41.12 ± 44.10
33.58 ± 54.31
Illness Duration (yrs ± SD)
12.57 ± 9.75
17.68 ± 9.50
15.80 ± 11.63
17.84 ± 10.59
16.02 ± 10.75

* Mean hospitalization days for group of patients reporting prior hospitalization.

Liu-Seifert et al. BMC Medicine 2005 3:21   doi:10.1186/1741-7015-3-21