A comparison of comorbidities obtained from hospital administrative data and medical charts in older patients with pneumonia

Table 6 Factors associated with under-reporting of 10 selected comorbidities

	Age	Previous admission	Male	No of comorbidities	Length of stay	Severity of illness
Solid tumour without mestastases		+		+
Liver disease	+	+		+
Chronic heart failure	+		+	+	+
Renal failure		+	+	+	+	+
Chronic pulmonary disease	+			+
Peripheral vascular disease		+		+
Hypertension	+			+
DM uncomplicated				+	+	+
DM complicated				+
Deficiency anaemia	+			+

+: denotes a positive association that is statistically significant (p-value < 0.05)

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