TABLE 1.

Association of childhood lower respiratory tract infection with lung function in adults

Study	No. in study	Lower respiratory tract infection history	Age at followup (yr)	Effect on FEV1
Barker et al. (26)	639 (all male)	Bronchitis or pneumonia in first yr	59–67	Lowered by 200 ml
Shaheen et al. (279)	618	Pneumonia or bronchitis in first 2 yr	67–74	Lowered by 650 ml in males with pneumonia
Johnston et al. (152)	1,392	Pneumonia or whooping cough in first 7 yr	34–35	Lowered by 102 ml with pneumonia
Shaheen et al. (280)	239	Pneumonia in first 14 yr	57.6 ± 4.3	Lowered by 390 ml
		Bronchitis in first 14 yr		Lowered by 130 ml