Table 1– Evidence from primary care studies

Study	Days since RTI	Myocardial infarction		Stroke
		OR	CI	OR	CI
*Meier et al. [82]*	1–5	3.6	2.2–5.7
	6–10	2.3	1.3–4.2
	11–30	1.2	0.9–1.7
	31–90	1.1	0.9–1.4
	91–365	1.0	0.8–1.0
*Smeeth et al. [83]*	1–3	4.95	4.43–5.53	2.57	2.03–3.27
	4–7	3.2	2.84–3.6	2.23	1.78–2.8
	8–14	2.81	2.54–3.09	1.51	1.23–1.86
	15–28	1.95	1.79–2.12	1.27	1.07–1.5
	29–91	1.4	1.33–1.48	1.27	1.15–1.41
*Clayton et al. [84]*	1–3	3.75	1.86–7.56	4.07	1.99–3.34
	4–7	2.1	1.38–3.21	1.92	1.24–2.97
	8–28	1.93	1.42–2.63	1.76	1.27–2.45
	29–91	1.16	0.92–1.47	1.09	0.88–1.36
	92–365	1.08	0.94–1.23	1.08	0.94–1.24

RTI: respiratory tract infection; OR: odds ratio; CI: confidence interval.