TABLE 2.

Investigation of factors associated with response to the telephone triage line following invitation: univariate and multivariable analyses

	Univariate		Multivariable
	OR (95% CI)	p-value	Adjusted OR (95% CI)#	p-value
Age group, years
<60	1.00		1.00
60–64	1.37 (1.30–1.45)	<0.001	1.31 (1.24–1.39)	<0.001
65–69	2.06 (1.95–2.18)	<0.001	1.86 (1.76–1.97)	<0.001
70–74	2.31 (2.18–2.45)	<0.001	1.92 (1.81–2.04)	<0.001
≥75	2.50 (2.35–2.67)	<0.001	1.99 (1.87–2.12)	<0.001
Gender
Female	1.00		1.00
Male	0.81 (0.78–0.84)	<0.001	0.81 (0.78–0.84)	<0.001
IMD quintile
1 (most deprived)	0.46 (0.43–0.49)	<0.001	0.58 (0.54–0.62)	<0.001
2	0.63 (0.59–0.68)	<0.001	0.71 (0.66–0.76)	<0.001
3	0.78 (0.73–0.83)	<0.001	0.84 (0.78–0.89)	<0.001
4	0.95 (0.89–1.01)	0.09	0.98 (0.92–1.05)	0.54
5 (least deprived)	1.00		1.00
Ethnicity (derived )¶
White	1.00		1.00
Black or Black British	0.58 (0.50–0.68)	<0.001	0.93 (0.79–1.09)	0.36
Asian or Asian British	0.63 (0.55–0.72)	<0.001	0.79 (0.68–0.90)	0.001
Mixed	0.89 (0.86–0.93)	<0.001	0.93 (0.89–0.97)	<0.001
Other	0.59 (0.49–0.70)	<0.001	0.73 (0.61–0.89)	0.001
Unclear	1.00 (0.81–1.23)	0.98	1.06 (0.85–1.32)	0.62
Not stated	0.47 (0.43–0.52)	<0.001	0.52 (0.47–0.58)	<0.001
Smoking status (derived)¶
Previously smoked	1.00		1.00
Currently smoking	0.37 (0.35–0.38)	<0.001	0.44 (0.42–0.46)	<0.001
Never smoked	1.15 (0.38–3.52)	0.80	1.13 (0.36–3.53)	0.83
Noninformative smoking code	0.74 (0.62–0.89)	0.002	0.78 (0.65–0.94)	0.01
COPD	0.93 (0.87–0.99)	0.025

IMD: Index of Multiple Deprivation; COPD: chronic obstructive pulmonary disease. ^#: n=44 943; ^¶: general practice electronic record codes used to derive ethnicity and smoking status.