1991-92 cohort1982-85 cohort
Age (years)10.5 (SD 0.4)17.8 (SD 0.4)17.7 (SD 1.2)24.9 (SD 1.2)
FEV1 (l)*EP1.80 (1.68,1.92)3.30 (3.10,3.49)3.30 (3.02,3.58)3.50 (3.22,3.78)
Control2.14 (2.05,2.24)3.65 (3.40,3.89)4.07 (3.81,4.31)4.10 (3.85,4.35)
FVC (l)*EP2.15 (2.00,2.29)4.09 (3,80,4.38)3.93 (3.58,4.30)4.47 (4.10,4.84)
Control2.44 (2.35,2.54)4.22 (3.95,4.50)4.59 (4.30,4.88)4.92 (4.61,5.24)
FEF50 (l/sec)*EP2.09 (1.89,2.30)4.06 (3.62,4.49)3.74 (3.42,4.07)4.01 (3.60,4.43)
Control2.78 (2.57,3.00)4.79 (4.27,5.31)5.22 (4.77,5.66)5.44 (5.01,5.86)
  • *Mean values (95% CI).