Table 2 Adjusted estimates for percent predicted FEV₁ and FVC associated with education level

1: Adjusted for smoking

Low

−2.53 (−3.13, −1.94)

<.01

24 %

−7.29 (−7.88, −6.71)

<.01

10 %

Intermediate

−0.21 (−0.79, 0.37)

0.48

74 %

−2.13 (−2.69, −1.57)

<.01

22 %

High

Reference

.

Reference

.

Trend Test P-Value

<.01

<.01

2: Model 1 adjusted for SHS

Low

−2.59 (−3.20, −1.99)

<.01

−2 %

−7.37 (−7.96, −6.79)

<.01

-1 %

Intermediate

−0.27 (−0.85, 0.32)

0.37

−27 %

−2.20 (−2.77, −1.64)

<.01

−4 %

High

Reference

.

Reference

.

Trend Test P-Value

<.01

<.01

3: Model 1 adjusted for biomass

Low

−2.49 (−3.12, −1.87)

<.01

2 %

−6.31 (−6.92, −5.70)

<.01

14 %

Intermediate

−0.19 (−0.78, 0.40)

0.54

11 %

−1.56 (−2.13, −0.99)

<.01

27 %

High

Reference

.

Reference

.

Trend Test P-Value

<.01

<.01

4: Model adjusted for mode of transport

Low

−1.99 (−2.64, −1.33)

<.01

22 %

−5.36 (−5.99, −4.73)

<.01

26 %

Intermediate

−0.04 (−0.63, 0.55)

0.90

82 %

−1.45 (−2.02, −0.88)

<.01

32 %

High

Reference

.

Reference

.

Trend Test P-Value

<.01

<.01

5: Model 1 adjusted for low fruit/veg

Low

−2.29 (−2.89, −1.68)

<.01

10 %

−6.86 (−7.45, −6.28)

<.01

6 %

Intermediate

−0.11 (−0.69, 0.47)

0.70

45 %

−1.96 (−2.53, −1.40)

<.01

8 %

High

Reference

.

Reference

.

Trend Test P-Value

<.01

<.01

6: Model 1 adjusted for occupation

Low

−1.82 (−2.51, −1.13)

<.01

28 %

−4.05 (−4.72, −3.39)

<.01

44 %

Intermediate

0.07 (−0.54, 0.67)

0.83

131 %

−0.93 (−1.51, −0.35)

<.01

56 %

High

Reference

.

Reference

.

Trend Test P-Value

<.01

<.01

7: All Covariates

Low

−1.55 (−2.27, −0.82)

<.01

39 %

−2.93 (−3.62, −2.24)

<.01

60 %

Intermediate

0.09 (−0.53, 0.70)

0.78

142 %

−0.52 (−1.11, 0.07)

0.08

76 %

High

Reference

.

Reference

.

Trend Test P-Value

<.01

<.01