Table 4 Associations between TG Cholesterol and Cognitive Function from Mixed Effects Models, CHARLS 2015 (N = 4,951)
| Â | Mental Status | Episodic Memory | Global Cognition |
|---|---|---|---|
Fixed effects | |||
 Intercept | 4.98***(0.95) | 11.42***(1.11) | 16.44***(1.72) |
 Blood TG (ref. <  = 150 mg/dl) | 0.21*(0.09) | 0.10(0.10) | 0.30(0.16) |
Individual-level controls | |||
 Age (years) | -0.08***(0.01) | -0.14***(0.01) | -0.22***(0.01) |
 Female (ref. male) | -1.90***(0.09) | -0.15(0.10) | -2.06***(0.15) |
 Urban (ref. rural) | 0.76***(0.09) | 0.64***(0.10) | 1.40***(0.16) |
 Annual household living expenditure (ln) | 0.14***(0.02) | 0.13***(0.02) | 0.27***(0.04) |
 Education (ref. primary school or below) | 1.85***(0.11) | 1.97***(0.12) | 3.81***(0.19) |
 Married (ref. not married) | 0.21(0.13) | 0.06(0.15) | 0.29(0.23) |
 Current cigarette smokers | -0.10(0.08) | -0.08(0.10) | -0.18(0.15) |
 Having depressive symptoms | -0.81***(0.09) | -0.86***(0.11) | -1.67***(0.16) |
 Having diabetes | 0.09(0.10) | 0.07(0.12) | 0.16(0.18) |
 Having cardiovascular disease | 0.26**(0.09) | 0.14(0.10) | 0.40**(0.15) |
 Obesity (ref. BMI < 28 km/m2) | 0.12(0.13) | 0.04(0.15) | 0.16(0.23) |
Community-level controls | |||
 Prefecture GDP per capita (ln) | 0.62***(0.08) | 0.22***(0.09) | 0.84***(0.14) |
 Community level of education (percentage of high school or above education) | 0.01***(0.01) | 0.01(0.00) | 0.02**(0.01) |
 Annual total precipitation (> = 800 mm) | 0.10(0.10) | -0.40***(0.11) | -0.30(0.18) |
 Annual temperature in January (< -10◦C/14◦F) | 0.18(0.13) | 0.48***(0.15) | 0.69**(0.24) |
 Annual temperature in July (≥ 28◦C/82.4◦F) | -0.31**(0.11) | -0.20(0.13) | -0.56**(0.20) |
 Ten-year a average PM2.5 concentration (μg/m3, 1kmx1km spatial resolution) | -0.01(0.01) | -0.01(0.01) | -0.01(0.01) |
Random effects | |||
 Terrains (plain vs. others) | 0.02(0.02) | 0.03(0.04) | 0.12(0.13) |
 Residual | 7.77*** (0.16) | 10.43***(0.21) | 25.00***(0.50) |