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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