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Table 4 Binary logistic regression analysis: odds of men ever having been diagnosed with asthma or asthma hayfever by dietary factor in the 45 and up study sample, new south wales, Australia, 2006-2009

From: Dietary factors associated with lifetime asthma or hayfever diagnosis in Australian middle-aged and older adults: a cross-sectional study

     Asthma (n = 61,968) Asthma/Hayfever (n = 70,979)
Dietary factor Mean age (years) Ever smoker (%) Mean BMI Model 1 Model 2 Model 1 Model 2
     Unadjusted OR (95% CI) Adjusted# OR (95% CI) Unadjusted OR (95% CI) Adjusted# OR (95% CI)
Fruits/vegetables        
 1st quintile (reference) 61.02 50 27.31 1.00 1.00 1.00 1.00
 2nd quintile 61.72 49 27.29 0.97 (0.90 to 1.06) 0.98 (0.90 to 1.06) 1.01 (0.95 to1.07) 1.00 (0.94 to 1.06)
 3rd quintile 62.04 50 27.16 1.03 (0.95 to 1.11) 1.03 (0.95 to 1.12) 1.07 (1.00 to 1.13) * 1.06 (0.99 to 1.12)
 4th quintile 63.01 50 27.21 0.96 (0.89 to 1.05) 0.97 (0.90 to 1.06) 1.05 (0.99 to 1.12) 1.05 (0.99 to 1.12)
 5th quintile 64.22 50 27.37 0.94 (0.86 to 1.02) 0.97 (0.89 to 1.05) 0.95 (0.89 to 1.01) 0.98 (0.92 to 1.04)
p value for trend 0.257 0.557 0.001 0.034
Meats/cheese        
 1st quintile (reference) 61.97 43 26.72 1.00 1.00 1.00 1.00
 2nd quintile 62.41 48 27.22 1.00 (0.92 to 1.09) 1.01 (0.93 to 1.10) 1.04 (0.98 to 1.11) 1.06 (0.99 to 1.12)
 3rd quintile 62.49 49 27.24 1.02 (0.94 to 1.11) 1.04 (0.95 to 1.13) 1.06 (1.00 to 1.13) * 1.09 (1.02 to 1.15) *
 4th quintile 62.78 53 27.42 1.06 (0.97 to 1.15) 1.08 (0.99 to 1.17) 1.12 (1.05 to 1.19) * 1.15 (1.08 to 1.22) *
 5th quintile 62.35 56 27.75 1.15 (1.06 to 1.25) * 1.18 (1.08 to 1.28) * 1.17 (1.10 to 1.24) * 1.22 (1.14 to 1.29) *
p value for trend 0.004 0.001 < 0.001 < 0.001
Poultry/seafood        
 1st quintile (reference) 63.26 53 27.03 1.00 1.00 1.00 1.00
 2nd quintile 62.51 51 27.27 0.98 (0.91 to 1.07) 0.98 (0.90 to 1.07) 1.02 (0.96 to 1.08) 1.01 (0.95 to 1.07)
 3rd quintile 62.45 49 27.28 0.98 (0.90 to 1.06) 0.97 (0.89 to 1.06) 1.03 (0.97 to 1.09) 1.01 (0.95 to 1.07)
 4th quintile 62.26 48 27.36 1.00 (0.92 to 1.09) 1.00 (0.92 to 1.09) 1.09 (1.02 to 1.15) * 1.06 (1.00 to 1.13) *
 5th quintile 61.52 48 27.39 1.09 (1.01 to 1.18) * 1.08 (0.99 to 1.17) 1.14 (1.08 to 1.21) * 1.11 (1.04 to 1.17) *
p value for trend 0.055 0.102 < 0.001 0.002
Grains/alcohol        
 1st quintile (reference) 59.50 63 27.85 1.00 1.00 1.00 1.00
 2nd quintile 60.94 53 27.70 1.02 (0.94 to 1.11) 1.03 (0.95 to 1.12) 1.06 (1.00 to 1.12) 1.05 (0.99 to 1.11)
 3rd quintile 62.55 47 27.29 0.95 (0.87 to 1.03) 0.97 (0.89 to 1.05) 1.03 (0.97 to 1.09) 1.02 (0.96 to 1.08)
 4th quintile 64.12 44 27.00 1.03 (0.94 to 1.11) 1.05 (0.97 to 1.14) 1.07 (1.00 to 1.13) * 1.06 (1.00 to 1.13) *
 5th quintile 64.88 41 26.51 0.93 (0.85 to 1.01) 0.96 (0.88 to 1.04) 1.02 (0.96 to 1.08) 1.02 (0.96 to 1.09)
p value for trend 0.057 0.137 0.195 0.277
  1. Notes: OR = odds ratio; BMI = body mass index in kg/m2; CI = confidence interval; *Significantly different from reference category, P < 0.05; #Model adjusted for age group (45–64, 65–74, 75–84, 85+), education (no school certificate, school or intermediate certificate, high school or leaving certificate, trade apprentice, certificate or diploma, university degree or higher), weight status (normal, underweight, overweight, obese), physical activity weekly minutes quartile, and smoking status (never smoked, ever smoked).