Background
Methods
Study Population
Study data sources
Primary outcome
Socio-economic status
Statistical analysis
Characteristics of the study population n (%) | Whole study population | Material deprivation Quintile 5 | Social deprivation Quintile 5 | |
---|---|---|---|---|
Total | 65,486 | 17,172 (26.3) | 13,247 (20.2) | |
Agee | 16-54 | 26,240 (40.1) | 7527 (28.7) | 4709 (18.0) |
55-64 | 10,054 (15.3) | 2698 (26.8) | 1839 (18.3) | |
65-74 | 8685 (13.3) | 2255 (26.0) | 1749 (20.1) | |
75-84 | 11,931 (18.2) | 2765 (23.2) | 2788 (23.4) | |
≥85 | 8576 (13.1) | 1927 (22.5) | 2162 (25.2) | |
Gendere | Male | 34,031 (52.0) | 9329 (27.4) | 6105 (17.9) |
Female | 31,455 (48.0) | 7843 (24.9) | 7142 (22.7) | |
Number of comorbidities | 0 | 43,269 (66.1) | 11,554 (26.7) | 8007 (18.5) |
1 | 12,442 (19.0) | 3168 (25.5) | 2817 (22.6) | |
2 | 5844 (8.9) | 1473 (25.2) | 1433 (24.5) | |
≥3 | 3931 (6.0) | 977 (24.9) | 990 (25.2) | |
Mechanism of injury | Motor vehicle collision | 14,707 (22.4) | 4143 (28.2) | 2244 (15.3) |
Fall | 41,170 (62.9) | 10,072 (24.5) | 9202 (22.4) | |
Penetrating | 2226 (3.4) | 774 (34.8) | 495 (22.2) | |
Other | 7383 (11.3) | 2183 (30.0) | 1306 (17.7) | |
Maximum abbreviated injury scale score | 1-2 | 26,894 (41.1) | 7428 (27.6) | 5505 (20.5) |
3 | 28,271 (43.2) | 7136 (25.2) | 5681 (20.1) | |
4 | 6787 (10.3) | 1767 (26.0) | 1251 (18.4) | |
5-6 | 3534 (5.4) | 841 (23.8) | 810 (22.9) | |
Body Region, most severe injury | Head | 12,749 (19.5) | 3333 (26.1) | 2783 (21.8) |
Thorax | 9096 (13.9) | 2486 (27.3) | 1663 (18.3) | |
Abdomen | 1854 (2.8) | 528 (28.5) | 378 (20.4) | |
Spine | 6784 (10.4) | 1687 (24.9) | 1263 (18.6) | |
Upper extremities | 11,274 (17.2) | 3041 (27.0) | 2366 (21.0) | |
Lower extremities | 23729 (36.2) | 6097 (25.7) | 4794 (20.2) | |
Glasgow coma scalef | 3-8 | 3358 (5.1) | 949 (28.3) | 602 (17.9) |
9-12 | 2010 (3.1) | 512 (25.5) | 459 (22.8) | |
13-15 | 60,118 (91.8) | 15,711 (26.1) | 12,186 (20.3) | |
Systolic blood pressuref | Normal (≥90) | 64,302 (98.2) | 16842 (26.2) | 13,012 (20.2) |
Shock (0–89) | 1184 (1.8) | 330 (27.9) | 235 (19.9) | |
Respiration ratef | Normal (10–29) | 63,869 (97.5) | 16,732 (26.2) | 12,934 (20.3) |
Abnormal (0–10; ≥30) | 1617 (2.5) | 440 (27.2) | 313 (19.4) | |
Transfer-in | No | 44,526 (68.0) | 10,190 (23.0) | 9958 (22.4) |
Yes | 20,960 (32.0) | 6982 (33.3) | 3289 (15.7) | |
Health care payer | Provincial public | 43,771 (66.9) | 11,794 (26.9) | 9210 (21.0) |
Road accidents | 11,282 (17.2) | 3019 (26.8) | 1954 (17.3) | |
Work accidents | 2903 (4.4) | 868 (29.9) | 401 (13.8) | |
Other | 3586 (5.5) | 679 (18.9) | 744 (20.8) | |
None/Unknown | 3944 (6.0) | 812 (20.6) | 938 (23.8) | |
Residential remoteness | Metropolitan Regiona | 21,282 (32.5) | 2969 (14.0) | 5975 (28.1) |
Other Regionsb | 11,214 (17.1) | 1807 (16.1) | 3065 (27.3) | |
Agglomerationsc | 11,824 (18.1) | 2654 (22.5) | 3328 (28.2) | |
Small towns & rural areasd | 21,166 (32.3) | 9742 (46.0) | 879 (4.2) | |
Discharge destination | Home | 38,276 (58.5) | 10,230 (26.7) | 6960 (18.2) |
Long stay | 4264 (6.5) | 806 (18.9) | 1146 (26.9) | |
Rehab | 6145 (9.4) | 1313 (21.4) | 1500 (24.4) | |
Acute care | 5531 (8.5) | 1842 (33.3) | 1080 (19.5) | |
Other | 11,270 (17.1) | 2981 (26.5) | 2493 (22.6) |
Sensitivity analyses
Results
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 |