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Table 1 Comparison of basic characteristics of the elderly in different age groups

From: Chronic disease and multimorbidity in the Chinese older adults’ population and their impact on daily living ability: a cross-sectional study of the Chinese Longitudinal Healthy Longevity Survey (CLHLS)

Variants

All

65–74 years

75–84 years

85–94 years

95–105 years

p

p for trend

 

N = 9155

N = 2519

N = 2735

N = 2452

N = 1449

  

Sex

     

 < 0.001

 < 0.001

 Male

4289 (46.8%)

1268 (50.3%)

1332 (48.7%)

1195 (48.7%)

494 (34.1%)

  

 Female

4866 (53.2%)

1251 (49.7%)

1403 (51.3%)

1257 (51.3%)

955 (65.9%)

  

Residence

     

0.052

0.007

 Rural

3814 (41.7%)

1100 (43.7%)

1146 (41.9%)

989 (40.3%)

579 (40.0%)

  

 City & Town

5341 (58.3%)

1419 (56.3%)

1589 (58.1%)

1463 (59.7%)

870 (60.0%)

  

Education

     

 < 0.001

 < 0.001

 No

3915 (42.8%)

535 (21.2%)

1055 (38.6%)

1339 (54.6%)

986 (68.0%)

  

 Yes

5240 (57.2%)

1984 (78.8%)

1680 (61.4%)

1113 (45.4%)

463 (32.0%)

  

Physical activity

     

 < 0.001

 < 0.001

 No

5839 (63.8%)

1396 (55.4%)

1567 (57.3%)

1674 (68.3%)

1202 (83.0%)

  

 Yes

3316 (36.2%)

1123 (44.6%)

1168 (42.7%)

778 (31.7%)

247 (17.0%)

  

Smoking

     

 < 0.001

 < 0.001

 No

7670 (83.8%)

1958 (77.7%)

2280 (83.4%)

2114 (86.2%)

1318 (91.0%)

  

 Yes

1485 (16.2%)

561 (22.3%)

455 (16.6%)

338 (13.8%)

131 (9.04%)

  

BMI

     

 < 0.001

 < 0.001

 Normal

4751 (52.1%)

1172 (46.7%)

1414 (51.9%)

1372 (56.1%)

793 (54.8%)

  

 Underweight

1315 (14.4%)

134 (5.34%)

313 (11.5%)

436 (17.8%)

432 (29.8%)

  

 Overweight

2291 (25.1%)

908 (36.2%)

732 (26.9%)

476 (19.5%)

175 (12.1%)

  

 Obese

770 (8.44%)

295 (11.8%)

264 (9.70%)

163 (6.66%)

48 (3.31%)

  

Number of Chronic disease

     

 < 0.001

 < 0.001

 0

3084 (33.7%)

793 (31.5%)

743 (27.2%)

822 (33.5%)

726 (50.1%)

  

 1

2985 (32.6%)

830 (32.9%)

921 (33.7%)

800 (32.6%)

434 (30.0%)

  

 2

1632 (17.8%)

468 (18.6%)

537 (19.6%)

452 (18.4%)

175 (12.1%)

  

 3

769 (8.40%)

237 (9.41%)

256 (9.36%)

209 (8.52%)

67 (4.62%)

  

  ≥ 4

685 (7.48%)

191 (7.58%)

278 (10.2%)

169 (6.89%)

47 (3.24%)

  

ADL impairment

     

 < 0.001

 < 0.001

 No

7589 (82.9%)

2437 (96.7%)

2539 (92.8%)

1876 (76.5%)

737 (50.9%)

  

 Yes

1566 (17.1%)

82 (3.26%)

196 (7.17%)

576 (23.5%)

712 (49.1%)

  

IADL impairment

     

 < 0.001

 < 0.001

 No

3654 (39.9%)

1915 (76.0%)

1254 (45.9%)

416 (17.05%)

69 (4.76%)

  

 Yes

5501 (60.1%)

604 (24.0%)

1481 (54.1%)

2036 (83.0%)

1380 (95.2%)

  

Depression

     

 < 0.001

 < 0.001

 No

4315 (47.1%)

1351 (53.6%)

1279 (46.8%)

1073 (43.8%)

612 (42.2%)

  

 Yes

4840 (52.9%)

1168 (46.4%)

1456 (53.2%)

1379 (56.2%)

837 (57.8%)

  

Falls

     

 < 0.001

 < 0.001

 No

7110 (78.5%)

2096 (84.0%)

2120 (78.4%)

1872 (77.1%)

1022 (71.6%)

  

 Yes

1944 (21.5%)

400 (16.0%)

583 (21.6%)

556 (22.9%)

405 (28.4%)

  
  1. BMI Body mass index, ADL Activities of daily living, IADL Instrumental activities of daily living