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Table 5 Comparison of secondary diagnoses between weekend and weekday emergency admissions (secondary diagnosis fields within the first episode)

From: Weekend admissions may be associated with poorer recording of long-term comorbidities: a prospective study of emergency admissions using administrative data

Condition

Percentage of admissions with the diagnosis recorded in the secondary diagnosis fieldsa

Common odds ratiob for weekend versus week (95% confidence interval)

Cochran-Mantel-Haenszel test p-valuec

Breslow-Day test p-valued

Weekday admissions

Weekend admissions

Total

Chronic pulmonary disease

76.44

75.82

76.29

0.962 (0.932 to 0.994)

0.020

0.094

Diabetes

89.20

88.72

89.08

0.950 (0.909 to 0.994)

0.026

0.320

Congestive heart failure

53.27

51.32

52.78

0.922 (0.878 to 0.967)

0.001

0.565

Dementia

83.95

84.44

84.09

1.036 (0.967 to 1.109)

0.313

0.717

Hemiplegia / paraplegia

43.09

43.25

43.14

0.990 (0.892 to 1.099)

0.852

0.031

Metastatic cancer

75.64

76.35

75.80

1.042 (0.902 to 1.204)

0.579

0.473

  1. aPatients with at least two emergency admissions with the relevant condition recorded between 2009 and 2011 and a further admission in 2011–2013 where the relevant condition was not the primary diagnosis
  2. bCommon odds ratio computed from trust-level odds ratios
  3. cCochran-Mantel-Haenszel test for odds ratio not equal to one
  4. dBreslow-Day test for homogeneity of odds ratios across trusts