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Table 4 Adjusted estimates for percent predicted FEV1 and FVC associated with education level stratified by gender

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

Female

Low

−2.61 (−3.70, −1.52)

<0.01

−3.63 (−4.67, −2.59)

<0.01

(n = 12,195)

Intermediate

−0.70 (−1.63, 0.23)

0.14

−1.16 (−2.05, −0.27)

0.01

 

High

Reference

 

Reference

 
 

Trend test p-value

 

<0.01

 

<0.01

Male

Low

−3.66 (−4.63, −2.69)

<0.01

−5.49 (−6.41, −4.57)

<0.01

(n = 10,683)

Intermediate

−1.06 (−1.87, −0.24)

0.01

−1.93 (−2.70, −1.15)

<0.01

 

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
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