Table 1

Mean (SD) of FEV1 (litres) and FVC (litres) by birth weight (gram) and current smoking status at every age

Age 43 yearsAge 53 yearsAge 60–64 years
NFEV1NFVCNFEV1NFVCNFEV1NFVC
Men
Birth weight (g)13853.5 (0.6)13264.2 (0.8)11743.2 (0.6)10604.1 (0.7)8563.1 (0.6)7773.9 (0.7)
 <2500323.3 (0.6)353.9 (0.9)333.1 (0.6)283.8 (0.7)212.9 (0.6)223.7 (0.7)
 2500–30002143.3 (0.6)1924.0 (0.7)1683.1 (0.6)1693.9 (0.6)1223.0 (0.6)1073.7 (0.7)
 3001–35004903.5 (0.6)4714.2 (0.8)3973.2 (0.6)3684.1 (0.7)3053.1 (0.5)2743.8 (0.7)
 3501–40004673.5 (0.6)4654.3 (0.8)4113.3 (0.6)3604.2 (0.7)3043.1 (0.6)2813.9 (0.7)
 >40001823.6 (0.6)1634.4 (0.8)1653.3 (0.6)1354.2 (0.7)1043.2 (0.6)933.9 (0.8)
Smoking13863.5 (0.6)13284.2 (0.8)11793.2 (0.6)10654.1 (0.7)7823.1 (0.6)7163.9 (0.7)
 Never smoker3313.5 (0.6)3254.3 (0.8)2923.3 (0.5)2694.1 (0.7)2113.1 (0.5)1933.9 (0.6)
 Ex-smoker6143.6 (0.6)6024.3 (0.8)5983.3 (0.6)5464.1 (0.7)4843.1 (0.6)4523.9 (0.7)
 Current smoker4413.3 (0.6)4014.0 (0.8)2893.0 (0.5)2503.9 (0.7)872.7 (0.6)713.7 (0.7)
Women
Birth weight (g)14512.6 (0.4)14483.1 (0.6)12182.3 (0.4)11752.9 (0.5)9322.2 (0.4)9112.7 (0.5)
 <2500572.3 (0.4)582.8 (0.6)452.2 (0.4)442.7 (0.4)302.0 (0.4)312.4 (0.5)
 2500–30003172.5 (0.4)3243.0 (0.6)2602.3 (0.4)2512.8 (0.5)1892.2 (0.4)1782.7 (0.5)
 3001–35005382.6 (0.4)5413.1 (0.6)4582.3 (0.4)4462.9 (0.5)3542.2 (0.4)3542.7 (0.5)
 3501–40004392.6 (0.4)4243.2 (0.6)3752.4 (0.4)3592.9 (0.5)2842.2 (0.4)2822.8 (0.5)
 >40001002.6 ((0.5)1013.2 (0.6)802.3 (0.4)752.8 (0.5)752.2 (0.4)662.7 (0.5)
Smoking14562.6 (0.4)14523.1 (0.6)12232.3 (0.4)11802.9 (0.5)8562.2 (0.4)8332.7 (0.5)
 Never smoker4702.6 (0.4)4743.1 (0.6)4062.4 (0.4)3882.9 (0.5)3002.2 (0.4)2932.7 (0.5)
 Ex-smoker5672.6 (0.4)5693.2 (0.6)5412.4 (0.4)5322.9 (0.5)4752.2 (0.4)4652.7 (0.5)
 Current smoker4192.4 (0.4)4093.0 (0.6)2762.2 (0.4)2602.7 (0.5)811.9 (0.4)752.4 (0.5)