Table 3.
Multilevel regressions for readmission and length of stay among patients with schizophrenia
| Model information | Outcome |
|||
|---|---|---|---|---|
| 30-day readmission |
90-day readmission |
1-year readmission |
Length of stay | |
| Level-1: patient (N) | 28,839 | 28,839 | 28,839 | 28,839 |
| Level-2: town (N) | 360 | 360 | 360 | 360 |
| Cluster size (Range) | 1–691 | 1–691 | 1–691 | 1–691 |
| Regression | Logit | Logit | Logit | Extra-Poisson |
| Fixed part estimate | OR (95% C·I.) | OR (95% C·I.) | OR (95% C·I.) | Ratio (95% C·I.) |
| Remote | 1.05(0.93–1.18) | 0.99(0.90–1.09) | 0.95(0.88–1.02) | 1.13**(1.05–1.22) |
| Gender (male vs. female) | 1.20***(1.12–1.29) | 1.17***(1.10–1.24) | 1.12***(1.07–1.18) | 1.20***(1.15–1.25) |
| Age 15–30 | (ref.) | (ref.) | (ref.) | (ref.) |
| Age 30–45 | 0.94(0.86–1.01) | 0.89***(0.83–0.94) | 0.87***(0.83–0.92) | 1.49***(1.42–1.56) |
| Age 45–60 | 0.94(0.84–1.06) | 0.85***(0.77–0.93) | 0.76***(0.70–0.82) | 1.74***(1.64–1.85) |
| Age 60–75 | 0.68***(0.54–0.84) | 0.62***(0.52–0.74) | 0.54***(0.47–0.63) | 1.46***(1.31–1.63) |
| Age 75–85 | 0.51*(0.27–0.94) | 0.57*(0.36–0.91) | 0.41***(0.27–0.60) | 1.21(0.90–1.61) |
| Payroll group 1 | (ref.) | (ref.) | (ref.) | (ref.) |
| Payroll group 2 | 0.76***(0.66–0.87) | 0.79***(0.71–0.89) | 0.80***(0.73–0.87) | 0.70***(0.64–0.76) |
| Payroll group 3 | 0.74***(0.67–0.80) | 0.78***(0.73–0.84) | 0.80***(0.76–0.85) | 0.69***(0.66–0.72) |
| Payroll group 4 | 0.48***(0.35–0.67) | 0.54***(0.42–0.69) | 0.48***(0.39–0.58) | 0.33***(0.27–0.42) |
| Having co-morbidity | 0.95(0.73–1.25) | 0.87(0.69–1.09) | 0.87(0.72–1.04) | 0.57***(0.47–0.69) |
| Region closer to the earthquake · Pre |
0.84**(0.75–0.94) | 0.85***(0.78–0.92) | 0.92*(0.86–0.99) | 0.69***(0.63–0.74) |
| Region closer to the earthquake · Post |
1.27**(1.09–1.48) | 1.11(0.98–1.26) | 1.04(0.93–1.15) | 1.81***(1.64–2.00) |
| Year 1996 | (ref.) | (ref.) | (ref.) | (ref.) |
| Year 1997 | 0.94(0.84–1.04) | 0.89**(0.82–0.97) | 0.82***(0.77–0.88) | 0.89***(0.85–0.94) |
| Year 1998 | 0.99(0.89–1.11) | 0.91*(0.83–1.00) | 0.82***(0.76–0.88) | 0.73***(0.69–0.77) |
| Year 1999 | 0.95(0.85–1.06) | 0.92(0.84–1.01) | 0.79***(0.74–0.86) | 0.59***(0.56–0.63) |
| Year 2000 | 0.84**(0.74–0.95) | 0.83***(0.75–0.91) | 0.76***(0.70–0.82) | 0.38***(0.35–0.41) |
| Random part estimate | Estimate (SE) | Estimate (SE) | Estimate (SE) | Estimate (SE) |
| Level-2 variance | 0.047***(0.012) | 0.016***(0.006) | 0.012***(0.004) | 0.045***(0.007) |
| Level-1 variance: Var(Readmissonij|πij) |
πij · (1−πij) | πij · (1−πij) | πij · (1−πij) | α · πij |
| α = 245.60***(2.06) | ||||
*
P < 0.05;
**
P < 0.01;
***
P < 0.001;
πij: expected values conditional on individual characteristics and random effects of towns
C·I.: Confidence interval; SE: Standard error; OR: Odds ratio; ref.: Reference group