Table 1.
Baseline characteristics of all participants by sarcopenia status.
| Variables | Total sample n = 4,378 | Possible sarcopenia n = 2,931 | Non-sarcopenic n = 1,477 | P |
|---|---|---|---|---|
| Sex (%) | < 0.001 | |||
| Men | 2,006 (45.8) | 1,225 (41.8) | 781 (54.0) | |
| Women | 2,372 (54.2) | 1,706 (58.2) | 666 (46.0) | |
| Age group (year) (%) | < 0.001 | |||
| 65–79 | 1,524 (34.8) | 508 (17.3) | 1,016 (70.2) | |
| 80–99 | 2,065 (47.2) | 1,668 (56.9) | 397 (27.4) | |
| ≥100 | 789 (18.0) | 755 (25.8) | 34 (2.4) | |
| Marital status (%) | < 0.001 | |||
| Married | 1,835 (41.9) | 858 (29.3) | 977 (67.5) | |
| Unmarried, divorced, or widowed | 2,543 (58.1) | 2,073 (70.7) | 470 (32.5) | |
| Education level (year) (%) | < 0.001 | |||
| 0 | 2,655 (60.6) | 2,094 (71.4) | 561 (38.8) | |
| 1–6 | 1,291 (29.5) | 669 (22.8) | 622 (43.0) | |
| ≥7 | 432(9.9) | 168 (5.7) | 264 (18.2) | |
| Pre-retirement occupation (%) | < 0.001 | |||
| Peasant | 2,767 (63.2) | 1,924 (65.6) | 843 (58.3) | |
| No-peasant | 1,611 (36.8) | 1,007 (34.4) | 604 (41.7) | |
| Household income (yuan) | 0.048 | |||
| ≥100,000 | 284 (6.5) | 175 (6.0) | 109 (7.5) | |
| < 100,000 | 4,094 (93.5) | 2,756 (94.0) | 1,338 (92.5) | |
| Smoking status (%) | < 0.001 | |||
| Previous | 461 (10.5) | 315 (10.7) | 146 (10.1) | |
| Current | 824 (18.8) | 446 (15.2) | 378 (26.1) | |
| Never | 3,093 (70.6) | 2,170 (74.1) | 923 (63.8) | |
| Consuming alcohol (%) | < 0.001 | |||
| Previous | 329 (7.5) | 216 (7.4) | 113 (7.8) | |
| Current | 768 (17.5) | 438 (14.9) | 330 (22.8) | |
| Never | 3,281 (74.9) | 2,277 (77.7) | 1,004 (69.4) | |
| Physical activities (%) | < 0.001 | |||
| Previous | 120 (2.7) | 90 (3.1) | 30 (1.4) | |
| Current | 961 (22.0) | 530 (18.1) | 431 (29.8) | |
| Never | 3,307 (75.5) | 2,311 (78.8) | 996 (68.8) | |
| BMI (kg/m2) | 21.78 ± 3.88 | 21.15 ± 3.84 | 23.07 ± 3.64 | < 0.001 |
| Waist circumference (cm) | 81.69 ± 11.13 | 80.40 ± 10.92 | 84.31 ± 11.10 | < 0.001 |
| Calf circumference (cm) | 29.90 ± 5.17 | 28.73 ± 4.90 | 32.26 ± 4.92 | < 0.001 |
| Grip strength max (kg) | 18.88 ± 10.71 | 13.66 ± 7.19 | 29.46 ± 8.66 | < 0.001 |
| Total DDS | 5.14 ± 1.76 | 4.82 ± 1.59 | 5.30 ± 1.54 | < 0.001 |
| Total DDS quartile | < 0.001 | |||
| Q1 ( ≤ 4) | 1,602 (36.6) | 1,175 (40.1) | 427 (29.5) | |
| Q2 (>4– ≤ 5) | 866 (19.8) | 593 (20.2) | 273 (18.9) | |
| Q3 (5– ≤ 7) | 1,543 (35.2) | 972 (33.2) | 571 (39.5) | |
| Q4 (≥8) | 367 (8.4) | 191 (6.5) | 176 (12.2) | |
| Vitamin D3 (ng/L) | 36.21 ± 19.45 | 34.79 ± 19.45 | 39.02 ± 19.15 | < 0.001 |
| Albumin (g/L) | 42.55 ± 42.20 | 41.50 ± 41.00 | 44.62 ± 57.55 | < 0.001 |
DDS, dietary diversity score; BMI, body mass index.