Table 1.
Baseline characteristics of the study population according to cognitive score
| Cognitive score |
p value | ||||
|---|---|---|---|---|---|
| 11 (57.1%) | 9–10 (23.4%) | 6–8 (14.0%) | 0–5 (5.5%) | ||
| Demographics | |||||
| Age, years1 | 68.7 ± 0.3 | 71.4 ± 0.4 | 72.5 ± 0.4 | 75.4 ± 0.6 | <0.001 |
| Men, % | 45 (43–48) | 47 (43–50) | 36 (31–40) | 42 (38–47) | 0.003 |
| African-American race, % | 5 (4–6) | 7 (6–9) | 15 (12–19) | 24 (19–29) | <0.001 |
| Education <12 years, % | 30 (26–24) | 45 (41–50) | 64 (59–69) | 79 (72–85) | <0.001 |
| Family income USD <20,000/year, % | 38 (34–41) | 54 (48–59) | 68 (62–73) | 77 (68–84) | <0.001 |
| Clinical characteristics | |||||
| Myocardial infarction, % | 10 (8–12) | 13 (11–15) | 11 (8–14) | 17 (12–23) | 0.005 |
| Congestive heart failure, % | 6 (5–8) | 6 (5–8) | 8 (6–11) | 12 (8–18) | 0.017 |
| Stroke, % | 5 (4–6) | 8 (6–10) | 7 (5–10) | 13 (10–16) | <0.001 |
| Diabetes, % | 15 (12–17) | 16 (14–19) | 18 (14–22) | 24 (19–31) | 0.008 |
| Hypertension, % | 61 (58–63) | 65 (61–70) | 67 (62–71) | 65 (58–72) | 0.078 |
| CKD, % | 17 (15–19) | 23 (20–27) | 26 (23–30) | 25 (22–29) | <0.001 |
| Physical inactivity, % | 18 (15–20) | 22 (19–26) | 32 (29–35) | 48 (41–54) | <0.001 |
| Current smoker, % | 16 (14–19) | 13 (10–16) | 16 (13–21) | 14 (9–19) | 0.204 |
| Current alcohol use, % | 40 (35–45) | 30 (26–36) | 19 (14–26) | 16 (11–22) | <0.001 |
| Laboratory data | |||||
| Urine albuminxreatinine, mg/g2 | 8.3 (4.6–17.7) | 9.0 (5.0–21.7) | 10.6 (5.6–25.4) | 12.7 (5.9–37.7) | 0.13 |
| Hemoglobin, g/dl1 | 14.0 ± 0.1 | 14.0 ± 0.1 | 13.7 ± 0.1 | 13.4 ± 0.1 | <0.001 |
| Serum 25-OH vitamin D, ng/ml1 | 28.0 ± 0.3 | 28.4 ± 0.5 | 25.9 ± 0.4 | 25.1 ± 0.8 | <0.001 |
| CRP, mg/12 | 2.1 (2.1–4.8) | 2.1 (2.1–5.3) | 2.1 (2.1–6.2) | 2.1 (2.1–5.9) | 0.26 |
Values are shown as percentages (95% CI)
1
Presented as mean ± standard error.
2
Presented as median and interquartile range.