Table 1 Baseline characteristics of the study participants across quartiles of PDI (N = 3153)
Characteristics | Quartiles of PDI | P value | |||
|---|---|---|---|---|---|
Q1 | Q2 | Q3 | Q4 | ||
(n = 818) | (n = 685) | (n = 918) | (n = 732) | ||
Female, n (%) | 694 (84.8) | 603 (88.0) | 792 (86.3) | 645 (88.1) | 0.178 |
Age, mean (SD), year | 62.2 (6.2) | 62.2 (6.5) | 62.3 (6.4) | 62.8 (6.4) | 0.250 |
Education, high school and above, n (%) | 411 (50.2) | 341 (49.8) | 492 (53.6) | 399 (54.5) | 0.497 |
Household income ≥40,000 CNY/year, n (%) | 258 (31.5) | 215 (31.4) | 335 (36.5) | 249 (34.0) | 0.143 |
Married, n (%) | 709 (86.7) | 597 (87.2) | 809 (88.1) | 624 (85.3) | 0.386 |
Active physical activity, n (%) | 589 (72.0) | 482 (70.4) | 674 (73.4) | 527 (72.0) | 0.610 |
Current smoker, n (%) | 68 (8.3) | 42 (6.1) | 66 (7.2) | 46 (6.3) | 0.313 |
Current alcohol drinker, n (%) | 126 (15.4) | 120 (17.5) | 155 (16.9) | 123 (16.8) | 0.721 |
Energy intake, mean (SD), kcal/d | 1995.2 (635.1) | 2094.6 (638.9) | 2131.9 (638.0) | 2266.5 (623.4) | <0.001 |
BMI, mean (SD), kg/m2 | 24.2 (2.9) | 24.3 (3.0) | 24.3 (3.2) | 24.6 (3.0) | 0.072 |
PHQ-9 score, mean (SD) | 1.12 (2.13) | 1.12 (1.92) | 1.10 (1.85) | 1.07 (2.12) | 0.941 |
Diabetes, n (%) | 90 (11.0) | 75 (11.0) | 93 (10.1) | 54 (7.4) | 0.065 |
CVD, n (%) | 33 (4.0) | 24 (3.5) | 39 (4.3) | 35 (4.8) | 0.682 |
Hypertension, n (%) | 430 (52.6) | 323 (47.2) | 456 (50.0) | 379 (51.8) | 0.160 |
