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Table 1 Descriptive characteristics of the study population

From: Association between social trust and the risk of cardiovascular disease in older adults in Korea: a nationwide retrospective cohort study

  Social trust, quintiles p value
1st (lowest) 2nd 3rd 4th 5th (highest)
Social trust range, % 41.5–52.8 53.1–58.3 58.5–60.2 60.4–66.6 67.6–88.5  
Number of people 434,166 444,249 417,097 429,368 431,949  
Age, years, mean (SD) 67.3 (7.1) 67.1 (7.1) 67.4 (7.2) 67.4 (7.1) 67.4 (7.3) < 0.001
Sex, N (%)
 Men 201,353 (46.4) 207,478 (46.7) 190,434 (45.7) 197,940 (46.1) 199,701 (46.2) < 0.001
 Women 232,813 (53.6) 236,771 (53.3) 226,663 (54.3) 231,428 (53.9) 232,248 (53.8)  
Area of residence, N (%)
 Capital 286,828 (66.1) 212,645 (47.9) 258,848 (62.1) 171,474 (39.9) 58,866 (13.6) < 0.001
 Metropolitan city 147,338 (33.9) 231,604 (52.1) 158,249 (37.9) 257,894 (60.1) 373,083 (86.4)  
Household income, quartiles, N (%)
 1st (highest) 151,583 (34.9) 164,470 (37.0) 167,764 (40.2) 160,742 (37.4) 176,961 (41.0) < 0.001
 2nd 105,931 (24.4) 109,409 (24.6) 97,325 (23.3) 106,419 (24.8) 106,706 (24.7)  
 3rd 79,459 (18.3) 78,192 (17.6) 67,796 (16.3) 73,518 (17.1) 69,518 (16.1)  
 4th (lowest) 97,193 (22.4) 92,178 (20.8) 84,212 (20.2) 88,689 (20.7) 78,764 (18.2)  
Charlson comorbidity index, N (%)
 0 190,708 (43.9) 193,912 (43.7) 184,037 (44.1) 183,936 (42.8) 180,981 (41.9) < 0.001
 1 121,047 (27.9) 123,748 (27.9) 114,967 (27.6) 118,112 (27.5) 122,152 (28.3)  
  ≥ 2 122,411 (28.2) 126,589 (28.5) 118,093 (28.3) 127,320 (29.7) 128,816 (29.8)  
  1. p value calculated by Chi-squared test for categorical variables and analysis of variance for continuous variables
  2. Acronyms: SD standard deviation, N number of people
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