Table 2.
Summary Statistics Comparing IPS Sample (N = 307) to Control Sample (N = 374)
| Variable | Overall | IPS | Control | Statistic | P |
| Work history | |||||
| Paid work in the community during past 5 y (wk) | Mean (SD) | Mean (SD) | Mean (SD) | ||
| 52.43 (69.68) | 52.71 (66.98) | 52.20 (71.91) | t679 = 0.10 | .924 | |
| Demographic characteristics | |||||
| Age | 39.53 (9.02) | 39.29 (8.84) | 39.73 (9.18) | t679 = −0.64 | .523 |
| n (%) | n (%) | n (%) | |||
| Gender | χ2 (1, N = 681) = 0.04 | .841 | |||
| Male | 372 (54.6) | 169 (55.0) | 203 (54.3) | ||
| Female | 309 (45.4) | 138 (45.0) | 171 (45.7) | ||
| Race/ethnicity | χ2 (3, N = 681) = 9.80 | .020 | |||
| Caucasian | 265 (38.9) | 130 (42.3) | 135 (36.1) | ||
| African American | 311 (45.7) | 144 (46.9) | 167 (44.7) | ||
| Latino | 85 (12.5) | 27 (8.8) | 58 (15.5) | ||
| Other | 20 (2.9) | 6 (2.0) | 14 (3.7) | ||
| Education level | χ2 (2, N = 681) = 5.47 | .065 | |||
| <High school | 229 (33.6) | 90 (29.3) | 139 (37.2) | ||
| =High school | 212 (31.1) | 97 (31.6) | 115 (30.7) | ||
| >High school | 240 (35.2) | 120 (39.1) | 120 (32.1) | ||
| Marital status | χ2 (2, N = 681) = 0.59 | .746 | |||
| Never married | 457 (67.1) | 207 (67.4) | 250 (66.8) | ||
| Married/living together | 43 (6.3) | 17 (5.5) | 26 (7.0) | ||
| Divorced/separated/widowed | 181 (26.6) | 83 (27.0) | 98 (26.2) | ||
| Disability benefits | χ2 (3, N = 677) = 2.82 | .420 | |||
| SSI only | 279 (41.2) | 116 (38.0) | 163 (43.8) | ||
| SSDI only | 174 (25.7) | 84 (27.5) | 90 (24.2) | ||
| SSI and SSDI | 93 (13.7) | 46 (15.1) | 47 (12.6) | ||
| Neither | 131 (19.4) | 59 (19.2) | 72 (19.4) | ||
| Homelessness during past year | χ2 (1, N = 470) = 1.89 | .170 | |||
| Yes | 103 (21.9) | 46 (19.3) | 57 (24.6) | ||
| No | 367 (78.1) | 192 (80.7) | 175 (75.4) | ||
| Clinical characteristics | |||||
| Primary diagnosis | χ2 (2, N = 681) = 0.48 | .786 | |||
| Psychotic disorder | 429 (63.0) | 192 (62.5) | 237 (63.4) | ||
| Mood disorder | 229 (33.6) | 106 (34.5) | 123 (32.9) | ||
| Other | 23 (3.4) | 9 (2.9) | 14 (3.7) | ||
| Substance abuse | χ2 (1, N = 651) = 0.08 | .772 | |||
| Yes | 106 (16.3) | 47 (15.8) | 59 (16.7) | ||
| No | 545 (83.7) | 250 (84.2) | 295 (83.3) | ||
| Symptoms | Mean (SD) | Mean (SD) | Mean (SD) | ||
| BPRS thought disturbance | 1.93 (0.96) | 1.86 (0.95) | 1.99 (0.97) | t679 = −1.82 | .069 |
| BPRS anergia | 1.73 (0.79) | 1.68 (0.78) | 1.78 (0.80) | t679 = −1.68 | .094 |
| BPRS disorganization | 1.61 (0.62) | 1.56 (0.58) | 1.64 (0.65) | t679 = −1.59 | .111 |
| BPRS depression | 2.45 (1.63) | 2.29 (1.58) | 2.58 (1.65) | t679 = −2.30 | .022 |
| BPRS total | 33.21 (9.06) | 32.21 (8.51) | 34.03 (9.42) | t679 = −2.62 | .009 |
| Days hospitalized during past year | 19.09 (43.04) | 19.32 (43.68) | 18.90 (42.57) | t677 = 0.13 | .899 |
Note: IPS, Individual Placement and Support; SSI, supplemental security income; SSDI, Social Security Disability Insurance; BPRS, Brief Psychiatric Rating Scale.