Table 1.
Baseline characteristics of study participants across the 4 groups (N = 1447)
| Characteristic | Overalla (n = 1447) | hs-CRP ≤ 3.0 mg/L & normal cognition (n = 689) | hs-CRP > 3.0 mg/L & normal cognition (n = 220) | hs-CRP ≤ 3.0 mg/L & CI (n = 389) | hs-CRP > 3.0 mg/L & CI (n = 149) | P for trend |
|---|---|---|---|---|---|---|
| Age, years, mean (SD) | 84.7 (0.2) | 84.3 (0.2) | 83.9 (0.3) | 86.9 (0.7) | 86.5 (0.8) | < 0.001 |
| Female | 899 (58.7) | 417 (58.2) | 115 (52.5) | 277 (72.2) | 90 (54.7) | 0.369 |
| ≥1 Years of education | 326 (30.8) | 175 (31.4) | 54 (35.2) | 71 (22.1) | 26 (29.6) | 0.385 |
| Currently married, yesb | 297 (37.9) | 195 (41.5) | 55 (44.5) | 31 (15.5) | 16 (23.3) | < 0.001 |
| Regular exercise, yesb | 182 (16.1) | 119 (19.3) | 27 (14.5) | 28 (8.4) | 8 (1.6) | < 0.001 |
| Current smoking, yesb | 151 (11.8) | 83 (14.0) | 28 (9.1) | 28 (6.9) | 12 (6.6) | 0.014 |
| Current alcohol drinking, yesb | 169 (13.0) | 97 (15.5) | 23 (9.5) | 35 (8.3) | 14 (6.4) | 0.014 |
| Body mass index, kg/m2, mean (SD) | 21.4 (0.3) | 21.3 (0.3) | 20.7 (0.5) | 23.2 (2.0) | 21.4 (0.8) | 0.424 |
| Central obesity, yesbc | 465 (39.8) | 243 (40.0) | 74 (41.6) | 120 (38.4) | 28 (34.6) | 0.716 |
| Adequate medical service, yesb | 1311 (94.2) | 643 (94.0) | 201 (96.0) | 342 (91.9) | 125 (94.7) | 0.855 |
Values are given as No. (%) unless otherwise stated. No. was based on study samples (unweighted). Means (SD) and percentages were weighted population estimates. CI, cognitive impairment
aOf 1447 participants, 46 with missing data on the weight variable were excluded for calculating weighted population estimates
bNumbers of missing data ranged from 3 to 41 (8 for married status, 41 for regular exercise, 8 for current smoking, 3 for alcohol drinking, 18 for central obesity, and 6 for adequate medication)
cCentral obesity (yes vs no) was defined as waist circumference (WC) ≥ 85 cm in men and WC ≥ 80 cm in women