Table 1.
Baseline characteristics of the study population according to total antioxidant capacity quartiles (RaNCD cohort data, N = 5067)
| Variable | Dietary total antioxidant capacity (TAC) | P value* | |||
|---|---|---|---|---|---|
| Q1 n = 1569 | Q2 n = 1295 | Q3 n = 1.121 | Q4 n = 1082 | ||
| Mean ± SD/n (%) | |||||
| TAC score | 0.10 ± 0.02 | 0.16 ± 0.02 | 0.24 ± 0.03 | 0.46 ± 0.19 | – |
| Age | 49.07 ± 8.68 | 47.38 ± 8.28 | 46.99 ± 8.35 | 46.52 ± 8.06 | < 0.001 |
| BMI (kg/m2) | 27.69 ± 4.83 | 28.71 ± 4.94 | 28.88 ± 4.90 | 29.17 ± 4.69 | < 0.001 |
| WHR | 0.94 ± 0.05 | 0.94 ± 0.06 | 0.95 ± 0.06 | 0.95 ± 0.06 | < 0.001 |
| Marital status | |||||
| Married | 1234 (78.65) | 1099 (84.86) | 972 (86.71) | 938 (86.69) | < 0.001 |
| Single | 139 (8.86) | 67 (5.17) | 66 (5.89) | 50 (4.62) | |
| Widowed/Divorced | 196 (12.49) | 129 (9.96) | 83 (7.40) | 94 (8.69) | |
| Socio-economic status | |||||
| 1(lowest) | 781 (49.78) | 430 (33.20) | 285 (25.47) | 192 (17.76) | < 0.001 |
| 2 | 543 (34.17) | 471 (36.37) | 362 (32.35) | 312 (28.86) | |
| 3(highest) | 245 (15.62) | 394 (30.42) | 472 (42.18) | 577 (53.38) | |
| Physical activity (Met-h/day) | |||||
| Light | 412 (26.26) | 357 (27.57) | 271 (24.17) | 283 (26.16) | < 0.001 |
| Moderate | 973 (62.01) | 768 (59.31) | 742 (66.19) | 713 (65.90) | |
| High | 184 (11.73) | 170 (13.13) | 108 (9.63) | 86 (7.95) | |
| Menopausal status | |||||
| Pre/perimenopausal | 985 (62.78) | 912 (70.42) | 808 (72.08) | 796 (73.57) | < 0.001 |
| Post-menopausal | 584 (37.22) | 383 (29.58) | 313 (27.92) | 286 (26.43) | |
| Current smoker | 37 (2.38) | 21 (1.64) | 25 (2.26) | 15 (1.40) | 0.010 |
| Hypertension | 296 (18.87) | 217 (16.76) | 174 (15.52) | 159 (14.70) | 0.023 |
BMI Body mass index; WHR Waist hip ratio
*Analysis of variance (ANOVA) and Chi square, P < 0.05