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Table 6 Generalized estimating equation to probe factors affect knowledge of smoking-related diseases in Chongqing, China

From: Knowledge about and sources of smoking-related knowledge, and influencing factors among male urban secondary school students in Chongqing, China

Parameter

Category

B

SE

95% CI

p value

Intercept

 

−0.679

0.151

−0.974 to −0.384

0

School category

High school

0.123

0.057

0.011–0.235

0.032*

Middle school

0a

   

Family financial circumstances

Rich

0.222

0.079

0.067 to 0.376

0.005*

Average

0.038

0.063

−0.086 to 0.162

0.547

Impoverished

0a

   

Father’s smoking status

Smoker

−0.095

0.064

−0.221 to 0.031

0.139

Non-smoker

0a

   

Mother’s smoking status

Smoker

0.001

0.127

−0.248 to 0.25

0.995

Non-smoker

0a

   

The number of smokers in family

Three or more persons

−0.082

0.099

−0.277 to 0.113

0.411

One or two persons

0.025

0.071

−0.115 to 0.165

0.723

None

0a

   

The number of smokers among friends

Three or more

0.044

0.055

−0.065 to 0.152

0.43

One or two

0.069

0.077

−0.082 to 0.221

0.37

None

0a

   

You attitude towards to friends smoke

Disagree

−0.371

0.142

−0.649 to −0.092

0.009*

Neutral

−0.278

0.138

−0.549 to −0.007

0.044*

Agree

0a

   

You attitude towards family members smoke

Disagree

0.588

0.168

0.259–0.917

0.000*

Neutral

0.445

0.168

0.116–0.774

0.008*

Agree

0a

   
  1. * Statistically significant (p < 0.05)
  2. aSet to zero because this parameter is redundant