Table 5 Results of Hierarchical linear model
From: Social disparities in body mass index (BMI) trajectories among Chinese adults in 1991–2011
Model 1 (Male) | Model 2 (Male) | Model 3 (Male) | Model 4 (Female) | Model 5 (Female) | Model 6 (Female) | |
|---|---|---|---|---|---|---|
Fixed effects | Estimated coefficient (Standard Error) | |||||
β0 | ||||||
γ00:intercept | 21.366635 (0.046718)*** | 19.439828 (0.179802)*** | 0.906344 (0.127572)*** | 21.679477 (0.052926)*** | 19.280736 (0.207830)*** | 0.392720 (0.122053)*** |
γ01 : age | 0.060650 (0.005794)*** | 0.001941 (0.001342) | 0.075230 (0.006734)*** | 0.001771 (0.001444) | ||
γ02 : BMI0 | 0.964868 (0.005054)*** | 0.971308 (0.004104)*** | ||||
γ03 : Edu | −0.006151 (0.026697) | 0.010334 (0.030745) | ||||
γ04 : income | −0.025078 (0.010421)* | 0.019315 (0.012029) | ||||
γ05 : urban | −0.028072 (0.023644) | −0.005214 (0.025541) | ||||
β1 | ||||||
γ10:intercept | 0.160326 (0.008958)*** | 0.287446 (0.039044)*** | 0.596288 (0.107234)*** | 0.174801 (0.008880)*** | 0.133414 (0.047592)*** | 0.349757 (0.106408) |
γ11 : age | −0.003930 (0.001163)*** | −0.003072 (0.001212)* | 0.001158 (0.001372) | 0.002269 (0.001432) | ||
γ12 : BMI0 | −0.029210 (0.004580)*** | −0.014896 (0.003761)*** | ||||
γ13 : Edu | 0.084286 (0.022512)*** | 0.006427 (0.025568) | ||||
γ14 : income | 0.030222 (0.010457)*** | 0.007475 (0.010010) | ||||
γ15 : urban | 0.125064 (0.023339)*** | 0.062926 (0.025742)* | ||||
β2 | ||||||
γ20:intercept | −0.002407 (0.000487)*** | −0.003085 (0.002109) | −0.014883 (0.005926)* | −0.002949 (0.000491)*** | 0.006691 (0.002595)** | 0.001594 (0.006872) |
γ21 : age | 0.000024 (0.000064) | −0.000003 (0.000067) | −0.000281 (0.000075)*** | −0.000316 (0.000078)*** | ||
γ22 : BMI0 | 0.001267 (0.000256)*** | 0.000418 (0.000260) | ||||
γ23 : Edu | −0.003866 (0.001172)*** | −0.001397 (0.001567) | ||||
γ24 : income | −0.001550 (0.000578)*** | −0.000242 (0.000531) | ||||
γ25 (urban) | −0.005359 (0.001335)*** | −0.004744 (0.001625)*** | ||||
Random effects | Variance component | |||||
\( {\upsigma}_{\upmu_0}^2 \):intercept | 4.43618*** | 4.21466*** | 0.00321 | 5.91456*** | 5.58332*** | 0.00414 |
\( {\upsigma}_{\upmu_1}^2 \):T | 0.06645*** | 0.06571*** | 0.10160*** | 0.05323*** | 0.05324*** | 0.09682*** |
\( {\upsigma}_{\upmu_2}^2 \): T2 | 0.00018*** | 0.00018*** | 0.00026*** | 0.00016*** | 0.00015*** | 0.00025*** |
\( {\upsigma}_{\upepsilon}^2 \):Error variance | 1.31591 | 1.31659 | 0.97326 | 1.41250 | 1.41327 | 1.06231 |
Number of observations | 10,588 | 10,530 | ||||
Number of individuals | 2496 | 2494 | ||||