Table 3 Multiple linear regression model with length of stay as the dependent variable
From: Emergency department crowding and length of stay before and after an increased catchment area
Variable | Regression coefficients (95% CI) | P-value |
|---|---|---|
Admission year | ||
2010 – reference | 0 | |
2011 | 42 (37; 47) | < 0.001 |
2012 | 53 (48; 59) | < 0.001 |
2013 | 55 (50; 61) | < 0.001 |
2014 | 38 (33; 43) | < 0.001 |
2015 | 19 (14; 25) | < 0.001 |
Admission day | ||
Monday – reference | 0 | |
Tuesday | −5 (−10; 0) | 0.038 |
Wednesday | −8 (−13; −3) | 0.002 |
Thursday | −12 (−17; −7) | < 0.001 |
Friday | 12 (7; 17) | < 0.001 |
Saturday | −40 (−45; −35) | < 0.001 |
Sunday | −35 (−41; −30) | < 0.001 |
Age group | ||
< 20 – reference | 0 | |
20–29 | 38 (27; 49) | < 0.001 |
30–39 | 46 (35; 57) | < 0.001 |
40–49 | 45 (34; 56) | < 0.001 |
50–59 | 43 (32; 53) | < 0.001 |
60–69 | 49 (39; 60) | < 0.001 |
70–79 | 54 (44; 65) | < 0.001 |
80–89 | 62 (52; 73) | < 0.001 |
90+ | 63 (51; 74) | < 0.001 |
Gender | ||
Male – reference | 0 | |
Female | 11 (8; 13) | < 0.001 |
Specialty | ||
Internal medicine – reference | 0 | |
Surgery | 21 (17; 24) | < 0.001 |
Orthopaedics | 13 (8; 17) | < 0.001 |
Neurology | −23 (−28; −19) | < 0.001 |