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Table 1 Baseline characteristics of study participants by sex and marital status

From: Association of marital status with cognitive function in Chinese hypertensive patients: a cross-sectional study

  Marital status (Total) Marital status (Male) Marital status (Female)
Characteristics Total married unmarried P-value Total married unmarried P-value Total married unmarried P-value
Number 9525 7698 1827   4570 3960 610   4955 3738 1217  
Age,years 63.7 ± 9.8 62.1 ± 9.3 70.4 ± 9.0  < 0.001 63.5 ± 10.3 62.7 ± 10.0 69.0 ± 10.4  < 0.001 63.8 ± 9.3 61.4 ± 8.4 71.1 ± 8.2  < 0.001
BMI,kg/m2 23.6 ± 3.5 23.8 ± 3.5 22.7 ± 3.5  < 0.001 23.4 ± 3.5 23.6 ± 3.5 22.3 ± 3.3  < 0.001 23.8 ± 3.6 24.1 ± 3.5 22.9 ± 3.5  < 0.001
SBP,mmHg 147.2 ± 17.5 146.8 ± 17.2 149.0 ± 18.4  < 0.001 145.2 ± 17.4 145.2 ± 17.3 145.1 ± 18.1 0.979 149.1 ± 17.4 148.6 ± 17.0 151.0 ± 18.2  < 0.001
DBP,mmHg 89.0 ± 10.8 89.8 ± 10.6 85.5 ± 10.9  < 0.001 90.2 ± 11.1 90.7 ± 10.9 87.0 ± 11.3  < 0.001 87.9 ± 10.4 88.9 ± 10.1 84.8 ± 10.6  < 0.001
Current smoking, N (%) 2498 (26.2) 2054 (26.7) 444 (24.3) 0.038 2208 (48.3) 1884 (47.6) 324 (53.1) 0.011 290 (5.9) 170 (4.5) 120 (9.9)  < 0.001
Current drinking, N (%) 2132 (22.4) 1847 (24.0) 285 (15.6)  < 0.001 1876 (41.1) 1652 (41.7) 224 (36.7) 0.020 256 (5.2) 195 (5.2) 61 (5.0) 0.780
MMSE 22.1 ± 6.4 22.8 ± 6.1 18.7 ± 6.6  < 0.001 24.9 ± 5.0 25.4 ± 4.6 21.7 ± 6.1  < 0.001 19.4 ± 6.4 20.1 ± 6.3 17.2 ± 6.4  < 0.001
Laboratory results
 Homocysteine,umol/L 17.9 ± 11.1 17.6 ± 11.0 18.9 ± 11.3  < 0.001 20.2 ± 13.6 19.9 ± 13.5 22.6 ± 14.3  < 0.001 15.7 ± 7.4 15.2 ± 6.9 17.0 ± 8.8  < 0.001
 Total cholesterol,mmol/L 5.1 ± 1.1 5.1 ± 1.1 5.1 ± 1.1 0.078 4.9 ± 1.1 4.9 ± 1.1 4.9 ± 1.0 0.182 5.3 ± 1.1 5.3 ± 1.1 5.3 ± 1.1 0.968
 Triglyceride,mmol/L 1.8 ± 1.3 1.9 ± 1.4 1.6 ± 1.0  < 0.001 1.7 ± 1.3 1.7 ± 1.3 1.4 ± 1.0  < 0.001 2.0 ± 1.3 2.1 ± 1.4 1.7 ± 1.0  < 0.001
 LDL,mmol/L 2.9 ± 0.8 2.9 ± 0.8 2.9 ± 0.8 0.912 2.8 ± 0.8 2.8 ± 0.8 2.8 ± 0.7 0.070 3.1 ± 0.8 3.1 ± 0.8 3.0 ± 0.8 0.210
 HDL,mmol/L 1.5 ± 0.4 1.5 ± 0.4 1.6 ± 0.4  < 0.001 1.5 ± 0.4 1.5 ± 0.4 1.5 ± 0.4 0.086 1.5 ± 0.4 1.5 ± 0.4 1.6 ± 0.4  < 0.001
 eGFR,ml/min/1.73m2 86.3 ± 19.6 87.9 ± 19.1 79.8 ± 20.2  < 0.001 84.8 ± 20.1 85.6 ± 19.9 79.6 ± 20.3  < 0.001 87.8 ± 18.9 90.3 ± 17.8 79.9 ± 20.1  < 0.001
Education,N(%)  < 0.001    < 0.001      < 0.001
 Illiteracy 3477 (36.5) 2466 (32.0) 1011 (55.3)   605 (13.2) 442 (11.2) 163 (26.7)   2872 (58.0) 2024 (54.1) 848 (69.7)  
 Primary school 4023 (42.2) 3363 (43.7) 660 (36.1)   2335 (51.1) 1982 (50.1) 353 (57.9)   1688 (34.1) 1381 (36.9) 307 (25.2)  
 Middle school and above 2025 (21.3) 1869 (24.3) 156 (8.5)   1630 (35.7) 1536 (38.8) 94 (15.4)   395 (8.0) 333 (8.9) 62 (5.1)  
Standard of living, N (%)      < 0.001      < 0.001      < 0.001
 Better 1246 (13.1) 1003 (13.0) 243 (13.3)   667 (14.6) 597 (15.1) 70 (11.5)   579 (11.7) 406 (10.9) 173 (14.2)  
 General 6491 (68.1) 5369 (69.7) 1122 (61.4)   3113 (68.1) 2751 (69.5) 362 (59.3)   3378 (68.2) 2618 (70.0) 760 (62.4)  
 Poorer 1788 (18.8) 1326 (17.2) 462 (25.3)   790 (17.3) 612 (15.5) 178 (29.2)   998 (20.1) 714 (19.1) 284 (23.3)  
Labour intensity, N (%)      < 0.001      < 0.001      < 0.001
 Light 5310 (55.7) 4129 (53.6) 1181 (64.6)   2484 (54.4) 2092 (52.8) 392 (64.3)   2826 (57.0) 2037 (54.5) 789 (64.8)  
 Medium 2219 (23.3) 1895 (24.6) 324 (17.7)   1142 (25.0) 1027 (25.9) 115 (18.9)   1077 (21.7) 868 (23.2) 209 (17.2)  
 Heavy 1996 (21.0) 1674 (21.7) 322 (17.6)   944 (20.7) 841 (21.2) 103 (16.9)   1052 (21.2) 833 (22.3) 219 (18.0)  
Stress, N(%)     0.957     0.222     0.017
 Rarely 6408 (67.3) 5182 (67.3) 1226 (67.1)   3317 (72.6) 2892 (73.0) 425 (69.7)   3091 (62.4) 2290 (61.3) 801 (65.8)  
 Sometimes 2294 (24.1) 1854 (24.1) 440 (24.1)   932 (20.4) 795 (20.1) 137 (22.5)   1362 (27.5) 1059 (28.3) 303 (24.9)  
 Always 823 (8.6) 662 (8.6) 161 (8.8)   321 (7.0) 273 (6.9) 48 (7.9)   502 (10.1) 389 (10.4) 113 (9.3)  
Sleep duration, h, N (%)      < 0.001      < 0.001      < 0.001
  < 5 395 (4.1) 290 (3.8) 105 (5.7)   153 (3.3) 124 (3.1) 29 (4.8)   242 (4.9) 166 (4.4) 76 (6.2)  
  ≥ 5 to < 8 4958 (52.1) 4096 (53.2) 862 (47.2)   2250 (49.2) 1999 (50.5) 251 (41.1)   2708 (54.7) 2097 (56.1) 611 (50.2)  
  ≥ 8 4172 (43.8) 3312 (43.0) 860 (47.1)   2167 (47.4) 1837 (46.4) 330 (54.1)   2005 (40.5) 1475 (39.5) 530 (43.5)  
History of disease
 Diabetes, N (%) 1726 (18.1) 1403 (18.2) 323 (17.7) 0.586 721 (15.8) 633 (16.0) 88 (14.4) 0.326 1005 (20.3) 770 (20.6) 235 (19.3) 0.331
 CHD, N (%) 533 (5.6) 407 (5.3) 126 (6.9) 0.007 274 (6.0) 232 (5.9) 42 (6.9) 0.320 259 (5.2) 175 (4.7) 84 (6.9) 0.003
Medication use, N (%)
 Antihypertensive drugs 5798 (60.9) 4617 (60.0) 1181 (64.6)  < 0.001 2752 (60.2) 2380 (60.1) 372 (61.0) 0.678 3046 (61.5) 2237 (59.8) 809 (66.5)  < 0.001
 Glucose-lowering drugs 447 (4.7) 368 (4.8) 79 (4.3) 0.407 176 (3.9) 163 (4.1) 13 (2.1) 0.018 271 (5.5) 205 (5.5) 66 (5.4) 0.935
 Lipoprotein-lowering drugs 258 (2.7) 219 (2.8) 39 (2.1) 0.093 109 (2.4) 96 (2.4) 13 (2.1) 0.659 149 (3.0) 123 (3.3) 26 (2.1) 0.041
  1. Data are expressed as mean ± SD and numbers (percentage) as appropriate
  2. Abbreviations: BMI Body mass index, SBP Systolic blood pressure, DBP Diastolic blood pressure, MMSE Mini‐Mental State Examination, LDL-C Low-density lipoprotein cholesterol, HDL-C High-density lipoprotein cholesterol, eGFR estimated glomerular filtration rate, CHD Coronary heart disease