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Table 4 Distribution of lung function parameters and annual changea

From: Second-hand smoke exposure in adulthood and lower respiratory health during 20 year follow up in the European Community Respiratory Health Survey

  ECRHS I ECRHS II ECRHS III Difference between ECRHS I and II (ml or % per year) Difference between ECRHS II and III (ml or % per year) Difference between ECRHS I and III (ml or % per year)
FEV1 (ml) 3789 (830) 3578 (816) 3116 (777) −24 (36) −42 (26) −34 (17)
FVC (ml) 4584 (1048) 4422 (1025) 4052 (994) −19 (45) −34 (35) −27 (21)
FEV1/FVC (%) 83 (7) 81 (6) 77 (6) −0.2 (0.5) −0.4 (0.4) − 0.3 (0.3)
  1. apresented as mean (SD)