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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
  1. Regression coefficients and 95% CIs in minutes