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Table 3 Effects of smoking behavior on different level body weight using the 2-stage Residual Inclusion estimation (2SRI)

From: Smoking and body weight: evidence from China health and nutrition survey

 

Effects of current smoker

Effects of number of cigarettes consumed daily

 

Coefficient

S.E.

95 % C.I.

Coefficient

S.E.

95 % C.I.

The dependent variable was underweight dummy variable

 Underweight

0.43***

0.134

(0.168, 0.692)

0.238***

0.044

(0.015 0.325)

 Residual

-0.12*

0.069

(-0.255, 0.015)

-0.029***

0.06

(-0.041 -0.016)

The dependent variable was healthy weight dummy variable

 Healthy Weight

0.511***

0.062

(0.388, 0.634)

0.133***

0.021

(0.092 0.175)

 Residual

-0.167***

0.031

(-0.228.-0.106)

-0.008** .

0.003

(-0.014 -0.002)

The dependent variable was overweight dummy variable

 Over weight and obese

-0.538***

0.063

(-0.661, -0.414)

-0.199**

0.022

(-0.242 -0.156)

 Residual

0.141***

0.03

(0.082, 0.200)

0.015*

0.003

(0.001,0.021)

The dependent variable was obese dummy variable

 Obese

-0.596***

0.063

(-0.721, -0.471)

-0.227***

0.025

(-0.277 -0.177)

 Residual

0.162***

0.0309

(0.102, 0.223)

0.017** .

0.003

(0.010 0.024)

  1. Note:*significant at the 10 % level;
  2. **significant at the 5 % level;
  3. ***significant at the 1 % level
  4. Std. errors are robust
  5. Underweight (BMI < 18.5), healthy weight (18.5 < =BMI < 22.9), overweight (23 = <BMI), obese(25 = <BMI)
  6. Socio-economic status, health behaviors as well as demographic characters, year dummy and district dummy are included. The full results are available from the authors upon request