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Table 1 Demographic and clinical characteristics of the participants (n = 1762)

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 Total (n = 1762) Normal serum lipids(n = 875) Dyslipidemia (n = 887) P
Male [n(%)] 714(40.5) 364(41.6) 350(39.5) 0.360
Age [Mean(SD),year] 55.48(9.95) 54.60(10.03) 56.34(9.80) < 0.001
Formal Education [n(%)]     0.009
 Uneducated 224(12.7) 90(10.3) 134(15.1)  
 Primary school 508(28.8) 263(30.1) 245(27.6)  
 High school or above 1030(58.5) 522(59.7) 508(57.3)  
Education years [Median(P25, P75), y] 7(4.0,8.0) 7(4.3,8.0) 7(4.0,8.0) 0.042
Marital status [n(%)]     0.054
 Married 1606(91.1) 809(92.5) 797(89.9)  
 Others 156(8.9) 66(7.5) 90(10.1)  
Tobacco use [n(%)] 510(28.9) 267(30.5) 243(27.4) 0.149
Alcohol consumption [n(%)] 251(14.2) 124(14.2) 127(14.3) 0.930
Lack of physical activity [n(%)] 261(14.8) 121(13.8) 140(15.8) 0.248
Comorbidities [n(%)]
 HP 831(47.2) 351(40.1) 480(54.1) 0.001
 DM 210(11.9) 72(8.2) 138(15.6) 0.001
 CHD 38(2.2) 14(1.6) 24(2.7) 0.110
 Atrial fibrillation 10(0.6) 2(0.2) 8(0.9) 0.060
Family history [n(%)]
 HP 542(30.8) 254(29.0) 288(32.5) 0.118
 DM 142(8.1) 69(7.9) 73(8.2) 0.791
 CHD 107(6.1) 57(6.5) 50(5.6) 0.441
 Dyslipidemia 32(1.8) 15(1.7) 17(1.9) 0.751
Physical examination [n(%)]
 Cardiac murmur 28(1.6) 14(1.6) 14(1.6) 0.971
 Arrhythmia 41(2.3) 27(3.1) 14(1.6) 0.136
MAP [Mean(SD), mmHg] 98.46(12.18) 95.99(11.55) 99.78(12.30) < 0.001
Pulse Rate [Mean(SD)] 75.32(8.85) 75.29(8.64) 75.35(9.06) 0.818
BMI[Mean(SD), kg/m2] 25.28(3.15) 24.67(2.98) 25.88(3.31) < 0.001
Biochemical examination
 FBG [Median(P25,P75), mmol/L] 5.40(5.06,5.82) 5.33(5.02,5.68) 5.49(5.12,6.00) < 0.001
 TC [Mean(SD), mmol/L] 5.05(0.99) 4.51(0.63) 5.58(0.99) < 0.001
 LDL [Mean(SD), mmol/L] 3.32(0.89) 2.86(0.65) 3.78(0.86) < 0.001
 HDL [Mean(SD), mmol/L] 1.40(0.31) 1.44(0.29) 1.37(0.33) 0.010
 TG [Median(P25,P75), mmol/L] 1.44(1.02,2.00) 1.11(0.89,1.39) 1.99(1.49,2.53) < 0.001
Cognition
 MMSE [Mean(SD)] 25.66(4.19) 25.87(4.15) 25.46(4.22) 0.038
 Cognitive impairment [n(%)] 226(12.8) 101(11.5) 125(14.1) 0.110
  1. Abbreviations, SD standard deviation; P25, 25% percentile; P75, 75% percentile, HP hypertension, DM diabetes mellitus, CHD coronary heart disease, MAP mean arterial pressure, BMI body mass index, FBG fasting blood glucose, TC total cholesterol, LDL low-density lipoprotein, HDL high-density lipoprotein, TG triglycerides, MMSE Mini-Mental State Examination