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Table 6 Statistical modelling results, showing the odds ratio for each variable in the model together with 95% confidence intervals (all p-values < 0.001)

From: Weekend admission to hospital has a higher risk of death in the elective setting than in the emergency setting: a retrospective database study of national health service hospitals in England

  Elective Admissions Emergency Admissions
Covariate OR lower CI upper CI OR lower CI upper CI
Male 1.31 1.14 1.51 1.16 1.13 1.20
Age Category 1: 40-44 years†† 0.73 0.31 1.67 2.99 2.27 3.94
Age Category 2: 45-49 years 0.86 0.40 1.83 4.98 3.91 6.33
Age Category 3: 50-54 years 1.33 0.70 2.50 6.36 5.05 8.02
Age Category 4: 55-59 years 2.86 1.74 4.72 10.25 8.30 12.65
Age Category 5: 60-64 years 2.63 1.62 4.26 13.54 11.08 16.54
Age Category 6: 65-69 years 4.46 2.85 6.98 17.54 14.41 21.34
Age Category 7: 70-74 years 4.82 3.08 7.54 32.03 26.52 38.68
Age Category 8 75-79 years 7.92 5.15 12.20 40.43 33.58 48.68
Age Category 9: 80-84 years 10.22 6.59 15.87 48.95 40.69 58.88
Age Category 10: 85-89 years 13.43 8.43 21.40 58.35 48.51 70.20
Age Category 11: 90-120 years 21.60 12.38 37.70 76.88 63.76 92.70
HRG withcc (vs. HRG without cc) 3.03 0.91 10.03 5.39 4.03 7.23
Age Category 1 and HRG withcc 1.00    0.79 0.51 1.22
Age Category 2 and HRG withcc 2.75 0.54 13.95 0.47 0.32 0.71
Age Category 3 and HRG withcc 2.87 0.69 11.86 0.56 0.39 0.81
Age Category 4 and HRG withcc 0.87 0.22 3.46 0.43 0.30 0.60
Age Category 5 and HRG withcc 1.24 0.34 4.57 0.41 0.30 0.57
Age Category 6 and HRG withcc 0.79 0.22 2.84 0.36 0.27 0.50
Age Category 7 and HRG withcc 0.47 0.13 1.67 0.10 0.08 0.14
Age Category 8 and HRG withcc 0.33 0.09 1.15 0.11 0.08 0.15
Age Category 9 and HRG withcc 0.31 0.09 1.11 0.12 0.09 0.16
Age Category 10 and HRG withcc 0.54 0.15 1.91 0.13 0.10 0.18
Age Category 11 and HRG withcc 0.48 0.12 1.89 0.14 0.10 0.19
Admission Quarter (Jul-Sep) 1.12 0.91 1.36 0.96 0.92 1.01
Admission Quarter (Oct-Dec) 1.00 0.81 1.23 0.93 0.89 0.97
Admission Quarter (Jan-Mar) 1.18 0.97 1.44 1.06 1.02 1.11
Complex Elderly 17.57 13.25 23.30 3.05 2.91 3.18
Zero day stay 0.08 0.04 0.16 - - -
Weekend vs. Weekday 1.44 1.16 1.77 1.09 1.05 1.13
  1. † Reference category is age 16-39 years. * Reference category is Apr-Jun. Covariates terms with "and" indicate interaction terms. ! Not applicable for emergency admissions