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Table 2 Differences in covariates between the cognitive impairment group and the normal cognition group

From: The gender- and age- dependent relationships between serum lipids and cognitive impairment: a cross-sectional study in a rural area of Xi’an, China

Variables CI (n = 226) NC (n = 1536) P
Gender [n(%)]    0.271
 Male 84(11.8) 630(88.2)  
 Female 142(13.5) 906(86.5)  
Age [n(%)]    < 0.001
 40–55 82(8.4) 897(91.6)  
  > 55 144(18.4) 639(81.6)  
Education years [Median(P25,P75), y] 8(5.0,9.0) 5(0.0,8.0) < 0.001
Marital status [n(%)]    < 0.001
 Married 190(11.8) 1416(88.2)  
 Others 36(23.1) 120(76.9)  
Tobacco use [n(%)]    0.704
 Y 63(12.4) 447(87.6)  
 N 163(13.0) 1089(87.0)  
Alcohol consumption [n(%)]    0.207
Y 26(10.4) 225(89.6)  
N 200(13.2) 1311(86.8)  
Lack of physical activity [n(%)]    0.021
 Y 45(17.2) 216(82.8)  
 N 181(12.1) 1320(87.9)  
HP [n(%)]    0.013
 Y 124(14.9) 707(85.1)  
 N 102(11.0) 829(89.0)  
DM [n(%)]    0.001
 Y 42(20.0) 168(80.0)  
 N 184(11.9) 1368(88.1)  
CHD [n(%)]    0.006
 Y 11(28.9) 27(71.1)  
 N 215(12.5) 1509(87.5)  
Atrial fibrillation [n(%)]    0.837
 Y 2(20.0) 8(80.0)  
 N 224(12.8) 1528(87.2)  
Family history of HP [n(%)]    < 0.001
 Y 43(7.9) 499(92.1)  
 N 182(15.0) 1034(85.0)  
 U 1(25.0) 3(75.0)  
Family history of DM [n(%)]    0.701
 Y 15(10.6) 127(89.4)  
 N 210(13.0) 1402(87.0)  
vU 1(12.5) 7(87.5)  
Family history of CHD [n(%)]    0.034
 Y 5(4.7) 102(95.3)  
 N 220(13.3) 1428(86.7)  
 U 1(14.3) 6(85.7)  
Family history of Dyslipidemia [n(%)]    0.529
 Y 2(6.3) 30(93.7)  
 N 223(12.9) 1500(87.1)  
 U 1(14.3) 6(85.7)  
Cardiac murmur [n(%)]    0.034
 Y 8(28.6) 20(71.4)  
 N 217(12.6) 1502(87.4)  
 U 1(6.7) 14(93.3)  
Arrhythmia [n(%)]    0.127
 Y 9(22.0) 32(78.0)  
 N 217(12.7) 1497(87.3)  
 U 0(0.0) 7(100.0)  
MAP [Mean(SD), mmHg] 100.90(12.71) 98.10(12.06) 0.002
Pulse Rate [Mean(SD)] 76.13(10.67) 75.20(8.55) 0.321
BMI[Mean(SD), kg/m2] 24.83(3.359) 25.35(3.181) 0.024
FBG [Median(P25,P75), mmol/L] 5.39(5.07,5.80) 5.42(5.04,6.02) 0.394
  1. Abbreviations, CI cognitive impairment, NC normal cognition, P25, 25% percentile, P75, 75% percentile, Y yes, N no, U unknown, HP hypertension, DM diabetes mellitus, CHD coronary heart disease, SD standard deviation, MAP mean arterial pressure, BMI body mass index, FBG fasting blood glucose