Table 5—

Difference in forced expiratory volume in one second (mL) per sd score in plasma analytes

Plasma analyteModel AModel BModel C
Vitamin C94 (62–126)50 (14–85)49 (13–85)
F statistic (df)189.7 (5998)117.4 (10935)90.3 (13929)
Vitamin A22 (−11–54)19 (−14–51)22 (−14–58)
F statistic (df)158.4 (61024)93.5 (10960)69.3 (13929)
Vitamin E18 (−13–49)−2 (−34–30)−12 (−47–24)
F statistic (df)185.0 (61020)120.1 (10956)90.27 (13929)
β-carotene42 (10–74)16 (−17–49)11 (−23–45)
F statistic (df)186.9 (61024)120.4 (10960)90.3 (13929)
  • Data are presented as n (95% confidence interval) unless otherwise stated

  • Model A adjusted for height, height2, age, age2 and sex

  • Model B adjusted for height, height2, sex, smoking status, number of cigarettes smoked per day, social class and activity level

  • Model C adjusted for height, height2, age, age2, sex, smoking status, number of cigarettes smoked per day, social class, activity level and other plasma analytes

  • df: degrees of freedom