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Table 1 Spirometry results expressed as percentage of predicted values

From: Reference values for spirometry in elderly individuals: a cross-sectional study of different reference equations

   NHANESIII ECSC93 GLI12
n Mean (SD) Mean (SD) Mean (SD)
Total
 FVC (%) 260 87.5 (26.7) 98.4 (30.5) 80.4 (22.9)
 FEV1 (%) 260 87.5 (31.5) 92.0 (33.5) 75.8 (25.2)
 FEV1/FVC (%) 260 97.7 (14.3) 85.9 (13.9) 92.3 (13.5)
Female
 FVC (%) 181 89.5 (26.9) 104.6 (30.5) 81.2 (22.4)
 FEV1 (%) 181 89.4 (31.6) 97.4 (34.2) 77.2 (24.9)
 FEV1/FVC (%) 181 98.48 (13.3) 82.2 (11.2) 93.1 (12.5)
Male
 FVC (%) 79 82.5 (25.6) 84.2 (25.3) 78.5 (23.9)
 FEV1 (%) 79 83.3 (30.9) 79.6 (28.4) 72.5 (25.8)
 FEV1/FVC (%) 79 96.0 (16.2) 94.3 (15.9) 90.6 (15.3)