Table 1 Comparison of general characteristics of study population n (%) (\(\stackrel{-}{\varvec{x}}\)±s)
From: ApoE gene polymorphisms and metals and their interactions with cognitive function
Items | CI (N = 217) | Control (N = 774) | χ2/t | p |
|---|---|---|---|---|
MMSE Score | 16.00 ± 5.01 | 25.00 ± 3.42 | 23.567 | 0.000 |
Sex | Â | Â | 25.332 | 0.000 |
 male | 63(29.03) | 386(49.87) |  |  |
 female | 154(70.97) | 388(50.13) |  |  |
Age | 70.00 ± 6.69 | 69.00 ± 6.06 | -1.992 | 0.047 |
Ethnicity | Â | Â | 4.189 | 0.123 |
 Han | 59(27.19) | 247(31.91) |  |  |
 Yao | 144(66.36) | 498(63.34) |  |  |
 Others | 14(6.45) | 29(4.75) |  |  |
marital status | Â | Â | 5.454 | 0.020 |
 No Spouse | 75(34.56) | 205(26.49) |  |  |
 With Spouse | 142(65.44) | 569(73.51) |  |  |
occupation | Â | Â | 1.601 | 0.206 |
 Farmers | 203(93.55) | 703(90.83) |  |  |
 Others | 14(6.45) | 71(9.17) |  |  |
Smoking | Â | Â | 3.371 | 0.066 |
 Yes | 34(15.67) | 165(21.32) |  |  |
 No | 183(84.33) | 609(78.68) |  |  |
Drinking | Â | Â | 0.103 | 0.748 |
 Yes | 79(36.41) | 291(37.60) |  |  |
 No | 138(63.59) | 483(62.40) |  |  |
Insomnia | Â | Â | 0.829 | 0.362 |
 Yes | 113(52.07) | 430(62.40) |  |  |
 No | 104(47.93) | 344(37.6) |  |  |
BMI(kg/m2) | 21.00 ± 3.39 | 22.00 ± 3.22 | 3.504 | 0.320 |
 <18.5 | 34(15.67) | 89(11.50)) |  |  |
 18.5–23.9 | 131(60.37) | 469(60.56) |  |  |
 24-27.9 | 45(20.74)) | 182(23.51) |  |  |
 >27.9 | 7(3.22) | 34(4.43) |  |  |
Systolic blood Pressure | Â | Â | 0.430 | 0.512 |
 Normal | 105(48.39) | 394(50.90) |  |  |
 abnormality | 112(51.61) | 380(49.10) |  |  |
Diastolic blood pressure | Â | Â | 5.236 | 0.022 |
 Normal | 133(61.29) | 538(69.51) |  |  |
 abnormality | 84(38.71) | 236(30.49) |  |  |
Gucose (mmol/L) | 4.97 ± 1.70 | 4.96 ± 1.35 | -0.872 | 0.383 |
LDL-C(mmol/L) | 3.44 ± 0.93 | 3.55 ± 0.95 | 0.736 | 0.462 |
HDL-C(mmol/L) | 1.87 ± 0.46 | 1.77 ± 0.45 | 0.628 | 0.111 |
TC(mmol/L) | 4.97 ± 1.70 | 4.96 ± 1.35 | -0.872 | 0.383 |
TG(mmol/L) | 1.03 ± 1.01 | 1.03 ± 0.95 | -0.204 | 0.839 |