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. Author manuscript; available in PMC: 2013 Jul 26.
Published in final edited form as: Soc Sci Med. 2009 Nov 10;70(3):412–419. doi: 10.1016/j.socscimed.2009.10.028

Table 4.

Results of Dynamic Regressions and Fixed-effect Regressions of Intermediate Health-related Outcomes: IFLS 1997–2000.

Dependent variables (intermediate health- related outcomes) Dynamic models Fixed-effect models
OR or b a (95% CI)
Labor migrants		 OR b or b (95% CI)
Other types of migrants		 OR or b a (95% CI)
Labor migrants		 OR b or b (95% CI)
Other types of migrants
Economic status and work stressors
 Log (per capita HH annual income) c 0.97 *** (0.49, 1.53) −5.12 *** (−6.38, −3.86) 1.24 * (0.29, 2.20) −5.37 *** (−6.32, −4.42)
 Usual weekly hours worked last yr c, d 13.78 ** (4.99, 22.6) 0.10 (−6.52, 6.73) 15.24 ** (5.83, 24.65) −0.64 (−11.12, 9.85)
Living Standards
 log(weekly per capita meat expenditure) c −2.81 *** (−3.74, −1.87) −2.21 *** (−3.07, −1.35) −2.35 *** (−2.86, −1.84) −2.02 *** (−2.51, −1.54)
 Piped water 6.41 *** (3.97, 10.36) 3.95 *** (2.10, 7.41) 3.89 *** (1.90, 7.94) 1.78 * (1.01, 3.13)
 Flush toilet 3.44 *** (2.10, 5.65) 2.24 ** (1.35, 3.70) 2.74 *** (1.56, 4.80) 1.17 (0.67, 2.01)
 Dirt floor 0.08 ** (0.20, 0.34) 0.09 *** (0.03, 0.32) 0.27 † (0.07, 1.07) 0.13 † (0.01, 1.18)
Health-related information, investment and behaviors
 HH information about local health facilities c −1.47 *** (−1.91, −1.04) −0.98 *** (−1.38, −0.58) −1.40 *** (−1.79, −0.99) −0.86 *** (−1.24, −0.48)
 Having health insurance 4.59 *** (2.15, 9.82) 1.59 (0.62, 4.06) 1.75 (0.71, 4.31) 0.97 (0.39, 2.41)
 Used preventive health care last month 1.16 (0.78, 1.72) 0.71 (0.44, 1.14) 0.85 (0.28, 2.58) 0.77 (0.25, 2.39)
 Currently smoking 1.21 (0.67, 2.17) 0.52 (0.23, 1.18) 1.84 (0.76, 4.45) e 2.03 (0.35, 11.87) f
 N 5,380 5,392

Note: Adjusted odds ratios or linear regression coefficients and associated confidence intervals are shown. The first two columns present results from dynamic models predicting proximate health-related outcomes on rural-urban migration status between 1997–2000, controlling for initial conditions and other characteristics in 1997. Other covariates are omitted from the table (same as Table 2). The last two columns present results from the corresponding fixed-effect models, with the same set of control variables.

a

The regressions compare proximate health-related outcomes between rural-urban labor migrants and rural non-migrants, with the latter being the reference category.

b

The regressions compare proximate health-related outcomes between rural-urban migrants for other purposes and rural non-migrants, with the latter being the reference category.

c

Indicate dynamic linear regression models. All others are dynamic logistic regression models.

d

The sample size is 3,186 because the question is restricted to respondents who were currently working at the time of the interview.

e

The sample sizes of the fixed-effect models are reduced by design and vary by health outcomes. They are, respectively, 5673, 2577, 5703, 1624, 2636, 476, 5703, 1482, 1064, and 744.

f

The sample sizes of the fixed-effect models are reduced by design and vary by outcomes. They are, respectively, 5771, 2569, 5720, 1640, 2632, 450, 5720, 1474, 1062, and 748.

***

p value < 0.001;

**

p value < 0.01;

*

p value < 0.05;

†

p value < 0.1