Table 1.

Demographic characteristics of cases and controls and associated ORs for early death and 95% CIs

Characteristics	Case		Control		OR*	95% CI
	n	%	n	%
Accommodation status
Spouse/Partner	156	32.2	233	48.1	1
Nursing/Residential	48	9.9	23	4.8	3.93	2.18 to 7.09
Sheltered dwelling	8	1.7	14	2.9	0.91	0.37 to 2.24
Alone	156	32.2	152	31.4	1.74	1.23 to 2.45
Lives with relative	53	11.0	40	8.3	2.32	1.41 to 3.82
Unknown	63	13.0	22	4.6	5.32	3.00 to 9.43
Marital status
Married/Cohabiting	189	39.1	257	53.1	1
Divorced	15	3.1	13	2.7	1.51	0.66 to 3.45
Unknown	44	9.1	15	3.1	3.79	2.06 to 6.96
Single	74	15.3	53	11.0	1.88	1.25 to 2.84
Widowed	162	33.5	146	30.2	1.60	1.14 to 2.22
Urban/Rural status
Rural	178	63.2	166	65.7	1
Urban	306	36.8	318	34.3	0.89	0.68 to 1.17
Deprivation quintile
Q1 (least deprived)	64	13.2	89	18.4	1
Q2	95	19.6	92	19.0	1.45	0.76 to 1.74
Q3	106	21.9	111	22.9	1.01	0.66 to 1.54
Q4	110	22.7	102	21.1	1.49	0.99 to 2.24
Q5 (most deprived)	109	22.5	90	18.6	1.47	0.95 to 2.27
Influenza vaccination uptake
No uptake	71	14.7	47	9.7	1
≥1 vaccination	324	66.9	345	71.3	0.63	0.43 to 0.94
Unknown	89	18.4	92	19.0	0.65	0.40 to 1.05
Baseline consultation activity (tercile)
<11	149	30.8	156	32.2	1
11–19	148	30.6	162	33.5	0.98	0.71 to 1.34
≥20	187	38.6	166	34.3	1.20	0.87 to 1.67
Smoking
Non-smoker	221	45.7	219	15.7	1
Ex-smoker	141	29.1	175	36.2	0.76	0.55 to 1.04
Current smoker	91	18.8	76	15.7	1.19	0.81 to 1.75
Unknown	31	6.4	14	2.9	2.30	1.16 to 4.56
Alcohol consumption
Current drinker	154	31.8	175	36.2	1
Ex-drinker	31	6.4	26	5.4	1.37	0.78 to 2.43
Never drank	189	39.1	191	39.5	1.13	0.82 to 1.55
Unknown	110	22.7	92	19.0	1.38	0.96 to 1.99

*Conditional logistic regression ORs for cases and controls matched on age, sex and year diagnosed.