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

Table 7 Comparison of diagnoses between weekend and weekday emergency admissions: regardless of primary diagnosis (all diagnosis fields within the first episode)

Condition	Percentage of admissions with the diagnosis recorded in any field^a			Common odds ratio^b for weekend versus week (95% confidence interval)	Cochran-Mantel-Haenszel test p-value^c	Breslow-Day test p-value^d
Condition	Weekday admissions	Weekend admissions	Total		Cochran-Mantel-Haenszel test p-value^c	Breslow-Day test p-value^d
Chronic pulmonary disease	79.69	79.16	79.56	0.964 (0.934 to 0.996)	0.027	0.051
Diabetes	89.61	89.09	89.48	0.946 (0.904 to 0.989)	0.015	0.312
Congestive heart failure	56.79	54.46	56.20	0.906 (0.865 to 0.950)	0.000	0.563
Dementia	84.27	84.75	84.41	1.036 (0.967 to 1.109)	0.312	0.647
Hemiplegia / paraplegia	43.49	43.62	43.52	0.989 (0.891 to 1.097)	0.835	0.019
Metastatic cancer	77.75	77.80	77.76	1.004 (0.869 to 1.160)	0.960	0.543

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

ISSN: 1472-6963