Table 2.
Comparison of characteristics between patients on one antipsychotic (NP) and patients on more than one antipsychotic (P)
| NP (n = 1302) | P (n = 1097) | Test statistic | P | |
|---|---|---|---|---|
| Age (years) | t = −7.81,d.f. = 2396 | <0.001 | ||
| Mean | 41.66 | 45.93 | ||
| SD | 13.74 | 12.82 | ||
| Daily CPZeq (mg day−1) | 411.47 | 983.10 | Z = −25.94 | <0.001 |
| Duration of illness* | χ2 = 68.28 | <0.001 | ||
| <1 year | 78 (6.00) | 33 (3.00) | ||
| 1–5 years | 199 (15.30) | 103 (9.40) | ||
| 6–10 years | 251 (19.30) | 152 (13.90) | ||
| 11–20 years | 369 (28.30) | 324 (29.50) | ||
| >20 years | 405 (31.10) | 485 (44.20) |
| OR (95% CI) | P | |||
|---|---|---|---|---|
| Gender* | ||||
| Female | 606 (46.50) | 452 (41.20) | 1.00 | |
| Male | 696 (53.50) | 645 (58.80) | 1.24 (1.06, 1.46) | <0.01 |
| Treatment setting | ||||
| General hospital | 363 (72.10) | 245 (22.30) | 1.00 | |
| Psychiatric hospital | 939 (27.90) | 852 (77.70) | 1.34 (1.11, 1.62) | <0.01 |
| First admission* | ||||
| No | 1058 (81.26) | 898 (81.90) | – | |
| Yes | 244 (18.74) | 199 (18.10) | – | NS |
| Medication use* | ||||
| Atypical antipsychotic | 620 (47.60) | 472 (43.00) | 0.83 (0.71, 0.98) | <0.05 |
| Anticholinergic drugs | 678 (52.10) | 850 (77.50) | 3.17 (2.65, 3.79) | <0.001 |
CPZeq, Chlorpromazine equivalents.
*
The figures are number of patients with percentage in parentheses.