Variable | Categories/units | Standard model1 (n = 8380) | Imputed model (n = 8976) | ||
---|---|---|---|---|---|
OR (95%CI) | p | OR (95%CI) | P | ||
CQUIN programme | |||||
Financial incentives | April 2014– | 1.56 (1.24–1.96) | < 0.001 | 1.56 (1.24–1.95) | < 0.001 |
Smoke-free policy | |||||
Smoke-free policy | Oct 2014– | 0.73 (0.57–0.93) | 0.010 | 0.72 (0.56–0.91) | 0.007 |
Time interaction |  | 1.02 (0.97–1.08) | 0.345 | 1.03 (0.98–1.09) | 0.210 |
Enhancements to EHCR | |||||
C1) Temporary form | Jul 2014–Nov 2014 | 1.94 (1.55–2.44) | < 0.001 | 1.99 (1.59–2.48) | < 0.001 |
C2) Amendments to recording of VBA | Jan 2015– | 0.97 (0.67–1.40) | 0.858 | 0.90 (0.63–1.31) | 0.593 |
C3) Electronic referral system (NRS) | Sept 2015– | 1.36 (0.98–1.87) | 0.062 | 1.79 (1.31–2.43) | < 0.001 |
Time interaction |  | 1.08 (1.01–1.14) | 0.015 | 0.94 (0.89–0.99) | 0.029 |
Admission characteristics | |||||
Admission date | Months (since Jan 2011) | 1.02 (1.01–1.03) | < 0.001 | 1.02 (1.01–1.03) | < 0.001 |
Length of stay | Days | 1.02 (1.01–1.02) | < 0.001 | 1.02 (1.01–1.02) | < 0.001 |
Length of stay squared | Days2 | 1.00 (1.00–1.00) | < 0.001 | 1.00 (1.00–1.00) | < 0.001 |
Previous admission characteristics (last 6 months) | |||||
No admission | Â | ref | Â | ref | Â |
Admission (smoking status not recorded) | 1.19 (1.03–1.38) | 0.018 | 1.22 (1.06–1.40) | 0.007 | |
Admission with smoking status recorded (non-smoker) | 1.04 (0.81–1.35) | 0.742 | 1.28 (1.00–1.64) | 0.047 | |
Admission with smoking status recorded (smoker and referral not offered) | 1.61 (1.06–2.45) | 0.025 | 1.71 (1.13–2.58) | 0.010 | |
Admission with referral offered | 1.28 (1.03–1.59) | 0.028 | 1.49 (1.21–1.84) | < 0.001 | |
Individual characteristics | |||||
Age | 16–24 | 1.34 (1.13–1.58) | 0.001 | 1.28 (1.10–1.51) | 0.002 |
25–34 | 1.11 (0.95–1.29) | 0.176 | 1.12 (0.97–1.29) | 0.116 | |
35–44 | ref |  | ref |  | |
45–54 | 1.03 (0.88–1.21) | 0.670 | 1.06 (0.91–1.23) | 0.435 | |
54–64 | 1.16 (0.95–1.41) | 0.143 | 1.14 (0.95–1.38) | 0.153 | |
≥65 | 0.95 (0.66–1.37) | 0.786 | 1.05 (0.74–1.49) | 0.777 | |
Sex | Male | ref | Â | ref | Â |
Female | 0.82 (0.74–0.91) | < 0.001 | 0.82 (0.74–0.90) | < 0.001 | |
Ethnicity | White | ref | Â | ref | Â |
African | 1.26 (1.07–1.48) | 0.005 | 1.20 (1.03–1.40) | 0.017 | |
Caribbean | 1.00 (0.83–1.22) | 0.968 | 1.01 (0.84–1.22) | 0.878 | |
Other black background | 1.18 (1.01–1.37) | 0.036 | 1.20 (1.04–1.39) | 0.011 | |
Mixed | 1.33 (0.97–1.83) | 0.072 | 1.19 (0.89–1.59) | 0.246 | |
Asian (inc. Chinese) | 1.24 (0.98–1.57) | 0.076 | 1.16 (0.93–1.45) | 0.188 | |
Other | 1.10 (0.89–1.36) | 0.390 | 1.11 (0.91–1.35) | 0.326 | |
Socioeconomic deprivation | 3 and 2 (least/medium) | ref | Â | ref | Â |
1 (most deprivation) | 1.13 (1.02–1.27) | 0.024 | 1.10 (0.99–1.22) | 0.065 | |
Legally detained in hospital for treatment (lifetime) | No | ref | Â | ref | Â |
Yes | 1.35 (1.18–1.53) | < 0.001 | 1.39 (1.22–1.57) | < 0.001 | |
HoNOS score | HoNOS scale (0–37) | 1.01 (1.00–1.02) | 0.073 | 1.01 (1.00–1.02) | 0.061 |
Diagnosis (ICD-10 disorder type) | F30–F39 (affective disorders) | ref |  | ref |  |
F20 or schizophrenia | 0.98 (0.84–1.15) | 0.836 | 0.99 (0.85–1.15) | 0.879 | |
F21–F29 (schizotypal, delusional) | 0.92 (0.79–1.07) | 0.296 | 0.93 (0.80–1.08) | 0.322 | |
<F20, >F40 and other3 | 0.75 (0.65–0.87) | < 0.001 | 0.75 (0.66–0.86) | < 0.001 |