Table 3.

Summary statistics of patient characteristics from EHR data and ABS NHS data

	EHR data (N = 201,462)			ABS National Health Survey 2014–15 (N = 2,069,060)
	n	%	95% CI	%	95% CI
Socio-demographics Age category (years)
45–49	11,477	5.7	5.4 to 6.0	5.6	4.3 to 6.9
50–54	18,453	9.2	8.8 to 9.5	9.1	7.3 to 10.9
55–59	24,102	12.0	11.6 to 12.3	13.1	11.2 to 15.0
60–64	29,745	14.8	14.5 to 15.1	17.6	15.9 to 19.3
65–69	33,172	16.5	16.2 to 16.8	17.8	16.0 to 19.6
70–74	27,902	13.8	13.6 to 14.1	13.5	11.7 to 15.3
75–79	23,078	11.5	11.2 to 11.8	10.0	8.5 to 11.5
80 +	33,530	16.6	16.0 to 17.3	13.2	11.2 to 15.2
Sex
Male	78,049	38.7	38.1 to 39.3	35.6	33.3 to 37.9
Female	123,376	61.2	60.6 to 61.8	64.4	62.1 to 66.7
Other	37	0.02	0.01 to 0.03	-	-
Remoteness area
Major cities of Australia	111,075	55.4	49.9 to 60.9	63.6	60.7 to 66.4
Inner regional Australia	62,221	31.1	26.2 to 36.3	23.3	20.1 to 26.6
Remote Australia	27,098	13.5	10.5 to 17.2	13.1	10.7 to 15.5
Clinical characteristics
BMI, mean (SD)	30.1 (6.5)	N/A	N/A	29.3 (8.8)	N/A
OA medication prescription/s	57,090	33.8	32.9 to 34.7	54.9	52.1 to 57.7
Chronic conditions*
Hypertension	81,004	44.4	43.5 to 45.3	40.0	37.0 to 42.9
Lipid disorder	58,478	31.2	30.1 to 32.3	26.6	24.1 to 29.1
Ischaemic heart disease (IHD)	23,522	11.8	11.4 to 12.2	6.8	5.2 to 8.3
Asthma	21,757	11.2	10.7 to 11.7	17.2	14.7 to 19.8
Diabetes	27,821	14.1	13.7 to 14.6	15.1	12.9 to 17.3
Chronic obstructive pulmonary disease (COPD)	12,709	6.4	6.0 to 6.8	8.8	7.5 to 10.1
Metastatic solid tumour	33,485	16.9	16.3 to 17.5	26.3	24.2 to 28.4
Depression	35,644	19.6	19.0 to 20.2	11.9	10.1 to 13.7
Anxiety and other neurotic, stress related and somatoform disorders	19,393	11.7	11.2 to 12.2	15.4	13.2 to 17.6

CI  confidence interval

^* most commonly occurring chronic conditions as identified by AIHW [20]

Note: Estimates from the NHS have been calculated using replicate weights and the jacknife variance estimator [21]