Table 4.

Most frequently self-reported clinical incident events in 7 month study observation period, ranked by total count, by vaccine exposure cohort

	Follow-up period (month after vaccinated or offered vaccination)
Incident events	1	2	3	4	5	6	7	Total	Number per 1000 patient months of follow-up
Received H1N1 vaccine
Chest infection	10	14	14	10	5	0	0	53	2.91
Coryza	5	8	6	1	3	1	0	24	1.32
Malaise	12	4	4	1	0	0	0	21	1.15
Cough	5	7	2	1	4	0	0	19	1.04
Allergy	9	1	1	1	0	0	0	12	0.66
Flu like symptoms	2	3	2	1	3	1	0	12	0.66
Pyrexia	7	4	1	0	0	0	0	12	0.66
Dyspnoea	1	4	2	1	2	1	0	11	0.60
Pharyngitis	4	2	3	0	2	0	0	11	0.60
Pain in limb	3	1	4	1	1	0	0	10	0.55
Headache	1	0	5	1	2	0	0	9	0.49
Myalgia	2	2	2	1	1	0	0	8	0.44
Rash	2	1	3	1	1	0	0	8	0.44
Diarrhoea	3	1	1	2	0	0	0	7	0.38
Chest pain	1	1	1	2	2	0	0	7	0.38
Sinusitis	1	0	0	2	2	2	0	7	0.38
Viral infection	0	2	0	3	1	0	0	6	0.33
Influenza	3	2	0	1	0	0	0	6	0.33
Nausea	3	1	0	2	0	0	0	6	0.33
Pain	4	0	2	0	0	0	0	6	0.33
Did not receive H1N1 vaccine
Chest infection	0	4	0	0	1	0	0	5	3.98
Coryza	0	2	0	0	0	0	0	2	1.59
Angina	0	0	1	0	0	0	0	1	0.80
Asthma worse	0	0	0	1	0	0	0	1	0.80
Carcinoma stomach	0	1	0	0	0	0	0	1	0.80
Cardiac failure	0	1	0	0	0	0	0	1	0.80
Cardiovascular system unspecified*	0	0	1	0	0	0	0	1	0.80
Constipation	0	0	0	1	0	0	0	1	0.80
Dyspnoea	0	0	1	0	0	0	0	1	0.80
Fracture	0	0	1	0	0	0	0	1	0.80

^*Patient verbatim term given as ‘heart problems’.