Table 1. Characteristics of CLHLS (Chinese Longitudinal Healthy Longevity Survey) participants ≥ 80 years of age by frail status.
| Characteristic | Frail status | ||
| Robust (n = 361) | Pre-frail (n = 3,904) | Frail (n = 2,330) | |
| ***Age, years, mean (SD) | 89.2 (7.3) | 90.4 (7.4) | 92.2 (7.5) |
| ***Female, [n (%)] | 188 (52.1) | 2,120 (54.3) | 1,396 (59.9) |
| ***Marital status Currently married and living with spouse, [n (%)] | 103 (28.5) | 1,089 (27.9) | 508 (21.8) |
| Education years, < 11 years, [n (%)] | 259 (71.7) | 3057 (78.3) | 1,936 (83.1) |
| ***Current smoker, [n (%)] | 68 (18.8) | 566 (14.5) | 252 (10.8) |
| ***Current drinker, [n (%)] | 69 (19.1) | 554 (14.2) | 247 (10.6) |
| SBP, mmHg, mean (SD) | 141.3 (21.5) | 140.7 (21.7) | 139.7 (21.4) |
| DBP, mmHg, mean (SD) | 79.2 (10.8) | 78.9 (11.5) | 78.6 (11.6) |
| ***BMI categories, [n (%)] | |||
| Underweight | 81 (22.4) | 842 (21.6) | 601 (25.8) |
| Normal | 222 (61.5) | 2,372 (60.8) | 1,290 (54.9) |
| Overweight | 48 (13.3) | 550 (14.1) | 325 (13.9) |
| Obesity | 10 (2.8) | 140 (3.6) | 114 (4.9) |
| ***History of Falls, [n (%)] | 80 (22.2) | 858 (22.0) | 655 (28.1) |
| History of Severe falls, [n (%)] | 28 (7.8) | 286 (7.3) | 236 (10.1) |
Abbreviations: SD: Standard Deviation; SBP: Systolic Blood Pressure; DBP: Diastolic Blood Pressure; BMI: Body mass index.
***P < 0.001