Skip to main content

Table 3 Adjusted estimates for percent predicted FEV1 and FVC associated with education level stratified by age category

From: Socioeconomic status is associated with reduced lung function in China: an analysis from a large cross-sectional study in Shanghai

  

FEV1 % Predicteda

FVC % Predicteda

  

Estimate (95 % CI)

P-value

Estimate (95 % CI)

P-value

Age < 40

Low

−0.82 (−2.01, 0.37)

0.18

−1.34 (−2.58, −0.10)

0.03

 

Intermediate

−0.58 (–1.25, 0.09)

0.09

−0.77 (−1.47, −0.08)

0.03

 

High

Reference

.

Reference

.

 

Trend test p-value

 

0.08

 

0.01

Age 40 – 64

Low

−1.85 (−3.05, −0.66)

<0.01

−2.23 (−3.39, −1.08)

<0.01

 

Intermediate

−0.64 (−1.77, 0.49)

0.27

−0.81 (−1.91, 0.28)

0.14

 

High

Reference

.

Reference

.

 

Trend test p-value

 

<0.01

 

<0.01

Age ≥ 65

Low

−4.76 (−7.33, −2.20)

<0.01

−5.50 (−7.60, −3.40)

<0.01

 

Intermediate

−1.65 (−4.39, 1.09)

0.24

−1.42 (−3.67, 0.82)

0.21

 

High

Reference

.

Reference

.

 

Trend test p-value

 

<0.01

 

<0.01

  1. aAdjusted for SHS exposure (yes or no), smoking history (current, former, and never), pack years of smoking, biomass exposure (yes or no), low fruit/vegetable diet (<1/day serving of either fruits or vegetables), mode of transport to work, and occupational category