Table 6– Relationship between the “prudent” dietary pattern and forced expiratory volume in 1 s (FEV1) according to smoking status
Never smokedEx-smokersCurrent smokers
SubjectsFEV1 LRegression coefficient#SubjectsFEV1 LRegression coefficient#SubjectsFEV1 LRegression coefficient#
Males
 Fifths of prudent diet score
  1 (lowest fifth)952.95±0.532382.74±0.601382.44±0.64
  21242.85±0.59-0.02 (-0.16–0.12)1912.83±0.620.09 (-0.01–0.20)452.61±0.680.17 (-0.04–0.38)
  3 (middle fifth)1213.04±0.550.07 (-0.07–0.21)1242.92±0.520.13 (0.01–0.25)202.72±0.530.18 (-0.10–0.46)
  4873.04±0.530.04 (-0.12–0.20)1502.85±0.610.12 (0.00–0.24)212.70±0.600.07 (-0.24–0.37)
  5 (highest fifth)803.09±0.590.01 (-0.16–0.18)1032.93±0.490.17 (0.04–0.31)143.11±0.390.46 (0.08–0.83)
 Fifths of prudent diet score as a trend0.01 (-0.03–0.05) p = 0.5740.04 (0.01–0.07) p = 0.0100.08 (0.00–0.15) p = 0.037
Females
 Fifths of prudent diet score
  1 (lowest fifth)552.00±0.35381.88±0.45251.62±0.41
  21181.99±0.390.03 (-0.08–0.14)681.85±0.46-0.12 (-0.28–0.05)421.77±0.380.13 (-0.09–0.36)
  3 (middle fifth)1881.99±0.390.00 (-0.10–0.11)1031.84±0.44-0.12 (-0.28–0.04)321.92±0.450.26 (-0.00–0.52)
  42242.03±0.400.03 (-0.07–0.14)891.86±0.46-0.13 (-0.30–0.03)172.02±0.360.33 (0.05–0.62)
  5 (highest fifth)2692.11±0.370.08 (-0.02–0.19)1042.06±0.38-0.02 (-0.18–0.14)181.97±0.430.07 (-0.21–0.35)
 Fifths of prudent diet score as a trend0.02 (0.00–0.04) p = 0.0330.01 (-0.02–0.04) p = 0.5190.03 (-0.03–0.10) p = 0.290
  • Data are presented as n, mean±sd or regression coefficient (95% CI), unless otherwise stated. #: adjusted for age, height, pack-years, smoke in home, age left education, home ownership status, number of rooms, number of cars, social class, fat mass, activity score, energy intake, alcohol, dietary supplement use, birth weight, father's social class at birth, inhaled or oral steroids use, paracetamol use.