Influenza vaccination, inverse care and homelessness: cross-sectional survey of eligibility and uptake during the 2011/12 season in London

Table 3 Influenza vaccine risk groups and uptake levels amongst the homeless compared to national rates during the 2011/12 respiratory virus season

	Homeless				National
Risk group	n/N	% in risk group (95% CI)	n/N	% of risk group vaccinated (95% CI)	% in risk group**	% of risk group vaccinated
16 to 64 in clinical risk group	169/434	38.9 (31.5, 48.2)	40/169	23.7 (19.8, 28.3)	13.0	53.2
Respiratory disease*	96/434	22.1 (17.7, 27.7)	24/96	25.0 (20.5, 30.5)	5.6	52.3
Heart disease*	41/434	9.5 (6.9, 13.0)	15/41	36.6 (25.3, 52.8)	2.1	55.5
Diabetes*#	17/434	3.9 (2.7, 5.7)	8/17	47.1 (25.4, 87.4)	3.2	68.6
Liver disease*	42/434	9.7 (5.2, 17.9)	10/42	23.8 (16.0, 35.4)	0.6	43.4
Degenerative neurological disease*	33/434	7.6 (5.4, 10.7)	9/33	27.3 (19.4, 38.3)	1.3	50.3
65 + #	21/455	4.6 (2.3, 9.1)	9/21	42.9 (16.7, 100.0)	15.0	74.0
Meets any criteria	190/455	41.8 (34.5, 50.5)	49/190	25.8 (19.5, 34.2)	30.7	65.8

*Clinical risk groups in those aged < 65. Totals add up to more than 169 as individuals can have more than one clinical risk factor.
**For 16 to 64 in clinical risk group and individual clinical risk factors (Respiratory disease, Heart disease, Diabetes, Liver disease, Degenerative neurological disease) denominator is all individuals aged 16–64 and registered with a GP. For 65+ and meets any criteria risk groups, denominator is all individuals registered with a GP aged over 16.
#Estimate may not reliable as sample size <30 or 95% CI half width >10.

ISSN: 1471-2458