Table 2.

 Associations of defined prevalent diseases with vaccination status (vaccinated versus unvaccinated), in subcohorts vaccinated in early and late phases of H1N1 vaccination campaign in Stockholm county, Sweden

Diseases and vaccination status	No	Prevalence odds ratios (95% CI)
Neurological diseases
Bell’s palsy
Unvaccinated	3236	1.00 (reference)
≤45 days	1998	1.26 (1.19 to 1.34)
>45 days	1816	1.01 (0.95 to 1.08)
Guillain-Barré syndrome:
Unvaccinated	408	1.00 (reference)
≤45 days	322	1.29 (1.11 to 1.50)
>45 days	188	0.79 (0.67 to 0.95)
Multiple sclerosis:
Unvaccinated	1275	1.00 (reference)
≤45 days	1866	2.97 (2.76 to 3.20)
>45 days	654	0.92 (0.83 to 1.01)
Anaesthesia or hypoaesthesia:
Unvaccinated	991	1.00 (reference)
≤45 days	671	1.40 (1.26 to 1.55)
>45 days	504	0.92 (0.82 to 1.02)
Paraesthesia:
Unvaccinated	5436	1.00 (reference)
≤45 days	3605	1.36 (1.30 to 1.42)
>45 days	3005	1.01 (0.97 to 1.06)
Polyneuropathy:
Unvaccinated	1559	1.00 (reference)
≤45 days	1556	1.46 (1.36 to 1.57)
>45 days	833	0.95 (0.88 to 1.04)
Narcolepsy:
Unvaccinated	86	1.00 (reference)
≤45 days	61	1.35 (0.96 to 1.90)
>45 days	57	1.19 (0.84 to 1.68)
Narcolepsy (aged ≤20 years):
Unvaccinated	1	1.00 (reference)
≤45 days	3	3.53 (0.31 to 39.8)
>45 days	3	2.69 (0.25 to 28.5)
Autoimmune diseases
Rheumatoid arthritis:
Unvaccinated	4861	1.00 (reference)
≤45 days	5894	2.03 (1.95 to 2.11)
>45 days	2695	0.94 (0.89 to 0.98)
Inflammatory bowel disease:
Unvaccinated	6058	1.00 (reference)
≤45 days	4946	1.79 (1.72 to 1.86)
>45 days	3838	1.17 (1.12 to 1.22)
Type 1 diabetes*:
Unvaccinated	268	1.00 (reference)
≤45 days	1086	6.17 (5.36 to 7.10)
>45 days	219	0.77 (0.64 to 0.92)

*Population born 1990 or later.