Skip to main content

Table 1 Baseline characteristics in baseline and 2015 follow-up cohort

From: Novel physical performance-based models for activities of daily living disability prediction among Chinese older community population: a nationally representative survey in China

  N (%) or Median(Q1-Q3)  
Variables Baseline 4-year follow-up
All samples ADL disability ADL independent P value
Overall 2192 311 1881  
Age (Years)     < 0.001*
 60 ~ 809 (36.9%) 82 (26.4%) 727 (38.6%)  
 65 ~ 569 (26.0%) 63 (20.3%) 506 (26.9%)  
 70 ~ − 423 (19.3%) 75 (24.1%) 348 (18.5%)  
 75 ~ 391 (17.8%) 91 (29.3%) 300 (15.9%)  
Gender     0.045*
 Male 892 (40.7%) 110 (35.4%) 782 (41.6%)  
 Female 1300 (59.3%) 201 (64.6%) 1099 (58.4%)  
Marital status     0.551
 Married/Cohabitated 1680 (76.6%) 233 (74.9%) 1447 (76.9%)  
 Widowed 468 (21.4%) 73 (23.5%) 395 (21.0%)  
 Other 44 (2.01%) 5 (1.61%) 39 (2.07%)  
Education     0.043*
 Illiterate 911 (41.6%) 153 (49.2%) 758 (40.3%)  
 Primary school 973 (44.4%) 126 (40.5%) 847 (45.0%)  
 Middle school 214 (9.76%) 24 (7.72%) 190 (10.1%)  
 High school 70 (3.19%) 6 (1.93%) 64 (3.40%)  
 College and above 24 (1.09%) 2 (0.64%) 22 (1.17%)  
Social activity     0.327
 Never 1163 (53.1%) 155 (49.8%) 1008 (53.6%)  
 Not regularly 261 (11.9%) 36 (11.6%) 225 (12.0%)  
 Almost Weekly 212 (9.67%) 28 (9.00%) 184 (9.78%)  
 Almost daily 556 (25.4%) 92 (29.6%) 464 (24.7%)  
Smoking     0.026*
 Never 1482 (67.6%) 214 (68.8%) 1268 (67.4%)  
 Quit 268 (12.2%) 40 (12.9%) 228 (12.1%)  
 Less than 20 /day 212 (9.67%) 38 (12.2%) 174 (9.25%)  
 More than 20 /day 230 (10.5%) 19 (6.11%) 211 (11.2%)  
Drinking     0.199
 Never 1422 (64.9%) 207 (66.6%) 1215 (64.6%)  
 Quit 237 (10.8%) 41 (13.2%) 196 (10.4%)  
 Less than once/month 116 (5.29%) 15 (4.82%) 101 (5.37%)  
 More than once/month 417 (19.0%) 48 (15.4%) 369 (19.6%)  
Night sleep (hours)     0.021*
 6–9 1216 (55.5%) 150 (48.2%) 1066 (56.7%)  
  < 6 807 (36.8%) 132 (42.4%) 675 (35.9%)  
  > =9 169 (7.71%) 29 (9.32%) 140 (7.44%)  
Comorbidity     0.425
 0 471 (21.5%) 63 (20.3%) 408 (21.7%)  
 1 633 (28.9%) 83 (26.7%) 550 (29.2%)  
  ≥ 2 1088 (49.6%) 165 (53.1%) 923 (49.1%)  
BMI     < 0.001 *
 Normal 1140 (52.0%) 141 (45.3%) 999 (53.1%)  
 Underweight 201 (9.2%) 34 (10.9%) 167 (8.9%)  
 Overweight 613 (28.0%) 76 (24.4%) 537 (28.5%)  
 Obese 238 (10.9%) 60 (19.3%) 178 (9.46%)  
Self-report health     < 0.001*
 Good 200 (9.12%) 23 (7.40%) 177 (9.41%)  
 Fair 616 (28.1%) 71 (22.8%) 545 (29.0%)  
 Poor 877 (40.0%) 116 (37.3%) 761 (40.5%)  
 Very poor 499 (22.8%) 101 (32.5%) 398 (21.2%)  
Depression symptoms     < 0.001*
 Normal 1180 (53.8%) 132 (42.4%) 1048 (55.7%)  
 Depression 1012 (46.2%) 179 (57.6%) 833 (44.3%)  
Cognitive function 9.00 [5.50;12.50] 7.00 [4.00;10.50] 9.50 [6.00;12.50] < 0.001*
Handgrip strength (kg) 24.75 [19.48;31.50] 22.00 [16.88;27.75] 25.32 [20.00;32.00] < 0.001*
Gait speed (m/s) 0.59 [0.45;0.73] 0.51 [0.37;0.64] 0.61 [0.46;0.75] < 0.001*
SPPB score 8.00 [6.00;10.0] 7.00 [5.00;9.00] 8.00 [7.00;10.0] < 0.001*
  1. Note. ADLs activities of daily living, BMI body mass index, SPPB Short Physical Performance Battery
  2. *p < 0.05