Table 2.
Adjusted mean differences and 95 % confidence intervals (CI) in hospital length of stay (LOS) according to socio-economic deprivation by age
| Socio-economic status | N (%) | Adjusteda difference in mean LOS (95 % CI) | ||
|---|---|---|---|---|
| All patients | <65 years | ≥65 years | ||
| Material deprivation | ||||
| Q1 | 8639 (13.2) | 1.00 | 1.00 | 1.00 |
| Q2 | 11,229 (17.2) | 0.43 (0.04-0.82) | 0.36 (−0.05-0.77) | 0.35 (−0.35-1.05) |
| Q3 | 13,439 (20.5) | 0.57 (0.20-0.95) | 0.57 (0.17-0.97) | 0.33 (−0.35-1.02) |
| Q4 | 15,007 (22.9) | 0.41 (0.03-0.78) | 0.37 (−0.02-0.77) | 0.23 (−0.45-0.90) |
| Q5 | 17,172 (26.2) | 0.49 (0.12-0.87) | 0.70 (0.32-1.09) | −0.01 (−0.71-0.69) |
| Trend p-value | 0.048 | 0.006 | 0.7 | |
| Social deprivation | ||||
| Q1 | 11,551 (17.6) | 1.00 | 1.00 | 1.00 |
| Q2 | 13,108 (20.0) | 0.13 (−0.22-0.47) | 0.13 (−0.21-0.48) | 0.15 (−0.52-0.83) |
| Q3 | 13,932 (21.3) | 0.38 (0.03-0.72) | 0.46 (0.12-0.81) | 0.38 (−0.29-1.04) |
| Q4 | 13,648 (20.8) | 0.87 (0.53-1.22) | 0.69 (0.33-1.04) | 1.08 (0.43-1.73) |
| Q5 | 13,247 (20.2) | 1.42 (1.06-1.77) | 1.22 (0.86-1.59) | 1.70 (1.04-2.36) |
| Trend p-value | <0.0001 | <0.0001 | <0.0001 | |
| Material and social deprivation | ||||
| Q1-Q1 | 1379 (2.1) | 1.00 | 1.00 | 1.00 |
| Q5-Q5 | 3535 (5.4) | 2.64 (1.77-3.50) | 2.27 (1.41-3.13) | 3.22 (1.54-4.90) |
| P-value | <0.0001 | <0.0001 | <0.0001 | |
LOS length of stay, Q quintile
aAdjusted for age, gender, number of comorbidities, mechanism of injury, Maximum Abbreviated Injury Scale score, body region of the most severe injury, Glasgow Coma Scale score, systolic blood pressure, respiratory rate, and transfer status