. 2014 Sep 27;14:1008. doi: 10.1186/1471-2458-14-1008

Table 8.

Logistic regression model exploring significant correlates for respondents spending over 10% of income on health

Variable	Logistic model B1			Logistic model B2			Logistic model B3			Logistic model B4			Logistic model B5
Variable	OR	p	95% CI	OR	p	95% CI	OR	p	95% CI	OR	p	95% CI	OR	p	95% CI
Number of chronic diseases	1.36	<0.01	1.24-1.49
Specific chronic conditions
Cancer				1.38	0.04	1.02-1.87
Heart				1.27	0.17	0.91-1.79
HBP				1.09	0.50	0.84-1.42
Stroke				0.95	0.88	0.47-1.91
Diabetes				1.79	<0.01	1.25-2.57
Asthma				1.32	0.10	0.95-1.85
Bronchitis				1.59	0.11	0.90-2.81
Arthritis				1.19	0.23	0.90-1.58
Osteoporosis				1.13	0.58	0.73-1.77
Depression				1.33	0.12	0.93-1.89
Multiple morbidity ^a
No disease							0.81	0.54	0.41-1.60
Arthritis only							1.40	0.43	0.60-3.28
All others with one disease							1.51	0.21	0.79-2.87
HBP and arthritis							1.51	0.37	0.62-3.67
HBP and diabetes							2.31	0.10	0.86-6.17
HBP and heart disease							0.41	0.40	0.05-3.27
Arthritis and asthma							b	b	b
All others with two diseases							1.87	0.04	1.02-3.42
HBP, arthritis and cancer							1.11	0.90	0.23-5.33
HBP, arthritis and diabetes							4.98	0.01	1.51-16.41
All others with three diseases							1.87	0.05	1.00-3.51
All with four diseases							2.71	<0.01	1.40-5.23
All with more than four diseases							5.08	<0.01	2.61-9.90
Natural clusters
People with none of these conditions										1.00	-	-
Group 1 (asthma-bronchitis-arthritis-osteoporosis-depression)										1.59	0.05	1.01-2.53
Group 2 (HBP-Diabetes)										1.66	0.02	1.07-2.58
Group 3 (heart-stroke)										1.74	0.03	1.05-2.88
Group 4 (cancer)										1.82	0.02	1.12-2.94
Clinically suggested clusters
Asthma and bronchitis													1.41	0.03	1.03-1.92
Arthritis and osteoporosis													1.16	0.29	0.88-1.54
Depression													1.33	0.12	0.93-1.89
Heart, HBP, stroke and diabetes													1.33	0.04	1.02-1.73
Cancer													1.37	0.04	1.02-1.86
Number of other chronic diseases				1.65	<0.01	1.38-1.98				1.60	<0.01	1.34-1.92	1.73	0.00	1.33-2.26
Age groups
75+	1.00	-	-	1.00	-	-	1.00	-	-	1.00	-	-	1.00	-	-
50-64 years	1.07	0.71	0.74-1.54	0.97	0.86	0.66-1.42	1.04	0.83	0.72-1.51	0.98	0.90	0.67-1.41	0.96	0.84	0.66-1.40
65-74 years	1.29	0.11	0.94-1.78	1.23	0.22	0.89-1.70	1.31	0.10	0.95-1.80	1.23	0.20	0.89-1.69	1.22	0.23	0.88-1.67
Male	1.77	<0.01	1.36-2.29	1.70	<0.01	1.29-2.23	1.71	<0.01	1.32-2.22	1.65	<0.01	1.27-2.15	1.73	<0.01	1.33-2.26
SF-12 physical health score	0.97	<0.01	0.95-0.99	0.97	<0.01	0.95-0.99	0.97	<0.01	0.95-0.99	0.96	<0.01	0.94-0.98	0.97	<0.01	0.95-0.98
SF-12 mental health score	0.97	0.01	0.95-0.99	0.97	0.01	0.95-0.99	0.97	0.01	0.95-0.99	0.96	<0.01	0.94-0.99	0.97	0.01	0.95-0.99
Region
Remote	1.00	-	-	1.00	-	-	1.00	-	-	1.00	-	-	1.00	-	-
Cities	2.87	0.09	0.84-9.82	2.92	0.09	0.84-10.19	3.00	0.08	0.87-10.39	2.80	0.10	0.82-9.49	2.79	0.10	0.82-9.51
Regional	2.68	0.12	0.78-9.19	2.75	0.11	0.78-9.62	2.75	0.11	0.79-9.56	2.58	0.13	0.76-8.81	2.58	0.13	0.75-8.85
	n = 2227; Pseudo R² = 0.08			n = 2227; Pseudo R² = 0.09			n = 2203; Pseudo R² = 0.08			n = 2227; Pseudo R² = 0.07			n = 2227; Pseudo R² = 0.08
	AIC = 1657; BIC = 1709			AIC = 1665; BIC = 1773			AIC = 1662; BIC = 1776			AIC = 1674; BIC = 1748			AIC = 1665; BIC = 1745

^aReference group is the participants with only HBP; b: Not calculated due to zero cell value.