Table 3.

Factors associated with frequent attender and high cost status, n = 31,960

	Frequent attender 10% (FA10)				High cost user 10% (HC10)				Frequent attender High cost (FAHC)
	Crude ratios		Adjusted ratios*		Crude ratios		Adjusted ratios*		Crude ratios		Adjusted ratios*
Factor	OR	95% CI	OR	95% CI	OR	95% CI	OR	95% CI	OR	95% CI	OR	95% CI
Sex
Male	1.00		1.00		1.00		1.00		1.00		1.00
Female	1.38	1.29–1.49	1.41	1.31–1.51	1.59	1.48–1.71	1.59	1.48–1.71	1.53	1.41–1.67	1.55	1.42–1.69
Age
18–34	1.00		1.00		1.00		1.00		1.00		1.00
35–44	1.33	1.21–1.47	1.34	1.21–1.48	1.58	1.42–1.76	1.60	1.44–1.78	1.43	1.26–1.61	1.44	1.27–1.63
45–54	1.27	1.15–1.40	1.26	1.14–1.39	1.76	1.59–1.95	1.77	1.60–1.96	1.43	1.27–1.61	1.43	1.26–1.61
55–68	1.55	1.41–1.72	1.54	1.41–1.72	2.17	1.95–2.41	2.16	1.95–2.40	1.74	1.54–1.96	1.72	1.52–1.95
Specialist consultation	3.90	3.57–4.25	3.89	3.56–4.24	5.05	4.64–5.50	5.13	4.70–5.59	4.88	4.43–5.38	4.87	4.41–5.37

* Adjusted for age, sex and industry when possible, OR = Odds ratio, CI = Confidence interval, 1.0 = reference group