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Table 1 Baseline characteristics of participants stratified by high-sensitivity C-reactive protein concentration quartiles

From: Associations of plasma high-sensitivity C-reactive protein concentrations with all-cause and cause-specific mortality among middle-aged and elderly individuals

Characteristics Overall HsCRP concentration quartiles (mg/L)
Q1 (< 0.86) Q2 (0.86–1.74) Q3 (174–3.59) Q4 (> 3.59)
No. of participants 14,220 3546 3556 3551 3567
Age, years 64.9 (10.3) 64.6 (10.5) 65.3 (10.4) 65.0 (10.3) 64.8 (10.1)
Women (%) 8102 (57.0) 1825 (51.5) 1878 (52.8) 2048 (57.7) 2351 (65.9)
Race (%)
 White 10,628 (74.7) 2701 (76.2) 2752 (77.4) 2649 (74.6) 2526 (70.8)
 Black 2433 (17.1) 517 (14.6) 497 (14.0) 630 (17.7) 789 (22.1)
 Other 1159 (8.2) 328 (9.2) 307 (8.6) 272 (7.7) 252 (7.1)
Household income (%), $
  < 20,000 3489 (24.5) 741 (20.9) 772 (21.7) 907 (25.5) 1069 (30.0)
 20,001-50,000 4602 (32.4) 1077 (30.4) 1168 (32.8) 1190 (33.5) 1167 (32.7)
  > 50,000 6129 (43.1) 1728 (48.7) 1616 (45.4) 1454 (40.9) 1331 (37.3)
Education levels, years (%)
  < 12 2455 (17.3) 488 (13.8) 569 (16.0) 671 (18.9) 727 (20.4)
 12–15 7907 (55.6) 1855 (52.3) 1959 (55.1) 2020 (56.9) 2073 (58.1)
  > 15 3858 (27.1) 1203 (33.9) 1028 (28.9) 860 (24.2) 767 (21.5)
BMI, kg/m2 28.37 (5.74) 25.97 (4.61) 27.56 (4.85) 29.11 (5.44) 30.81 (6.68)
Current smoker (%) 7963 (56.0) 1835 (51.7) 1949 (54.8) 2050 (57.7) 2129 (59.7)
Current drinker (%) 5288 (37.2) 1501 (42.3) 1414 (39.8) 1279 (36.0) 1094 (30.7)
Regular exercise (%) 11,675 (82.1) 3071 (86.6) 3035 (85.3) 2873 (80.9) 2696 (75.6)
HDL-C, mg/dL 54.5 (16.1) 56.5 (16.8) 54.8 (16.1) 53.8 (16.0) 52.9 (15.4)
HbA1c, % 5.9 (1.1) 5.7 (0.9) 5. 8 (1.0) 5.9 (1.1) 6.0 (1.2)
TC, mg/dL 201.1 (42.6) 197.3 (41.3) 200.7 (42.2) 202.1 (43.2) 204.3 (43.4)
CES-D 8 score 1.5 (2.0) 1.3 (1.9) 1.4 (1.9) 1.6 (2.1) 1.7 (2.1)
Pulmonary disorder (%) 773 (5.4) 123 (3.5) 150 (4.2) 221 (6.2) 279 (7.8)
Heart disease (%) 2853 (20.1) 657 (18.5) 706 (19.9) 718 (20.2) 772 (21.6)
Stroke (%) 902 (6.3) 189 (5.3) 228 (6.4) 219 (6.2) 266 (7.5)
Psychological problems (%) 2195 (15.4) 498 (14.0) 483 (13.6) 564 (15.9) 650 (18.2)
Hypertension (%) 7627 (53.6) 1587 (44.8) 1861 (52.3) 1996 (56.2) 2183 (61.2)
Diabetes (%) 2790 (19.6) 598 (16.9) 637 (17.9) 703 (19.8) 852 (23.9)
Limitation in ADLs (%) 1031 (7.3) 228 (6.4) 234 (6.6) 248 (7.0) 321 (9.0)
  1. Values are expressed as the mean (standard deviation) or number (percentage);
  2. ADLs Activities of daily living, BMI Body mass index, CES-D 8 score The 8-question Center for Epidemiologic Studies Depression Scale, HbA1c Hemoglobin A1c, HDL-C High-density lipoprotein cholesterol, TC Total cholesterol