Table 2 Characteristics of the study population according to status of survival.

From: Prediction of mortality in Chinese very old people through the frailty index based on routine laboratory data

 

Status of survival

P value

Alive (n = 342)

Death (n = 394)

Age (years)

93.3 ± 3.4

93.9 ± 3.4

0.026*

Female (%)

69.0

66.2

0.425

BMI (kg/m2)

19.4 ± 3.3

19.2 ± 3.6

0.374

Weight (kg)

41.3 ± 8.1

41.2 ± 8.8

0.890

Height (cm)

146.5 ± 10.0

146.5 ± 10.0

0.940

WC (cm)

76.8 ± 9.5

77.3 ± 9.3

0.504

SBP (mmHg)

140.1 ± 22.3

140.2 ± 23.6

0.935

DBP (mmHg)

72.2 ± 11.4

73.4 ± 12.7

0.155

Education level (%)

   Illiteracy

72.4

72.3

 

   Primary school

25.2

25.2

 

   Secondary school or advanced

2.3

2.5

0.985

Smoking (%)

45.6

41.6

0.272

Alcohol drinking (%)

27.3

24.6

0.402

Having exercise habit (%)

45.9

32.2

<0.001**

Frailty (%)

29.2

36.8

0.030*

TG (mmol/l)

1.2 ± 0.7

1.2 ± 0.7

0.765

TC (mmol/l)

4.2 ± 0.8

4.1 ± 0.8

0.351

HDL-C (mmol/l)

1.6 ± 0.6

1.6 ± 0.7

0.616

LDL-C (mmol/l)

2.3 ± 0.6

2.3 ± 0.6

0.981

SUA (μmol/l)

318.3 ± 86.8

321.5 ± 88.4

0.617

Hypertension

8.8

11.2

0.281

Cardiovascular disease

5.0

4.6

0.798

Cerebrovascular disease

2.6

1.5

0.288

Diabetes

0.3

1.5

0.130

Respiratory disease

12.3

17.8

0.039*

Digestive disease

16.1

18.3

0.432

Chronic renal disease

2.0

2.8

0.514

Osteoarthritis

26.6

31.7

0.128

  1. Data are the mean ± SD unless otherwise indicated. *P < 0.05, **P < 0.01.
  2. Abbreviations: BMI, body mass index; HDL-C, high-density lipoprotein cholesterol; LDL-C, low-density lipoprotein cholesterol; SUA, serum uric acid; TC, total cholesterol; TG, triglycerides; WC, waist circumference; SBP, systolic blood pressure; DBP, diastolic blood pressure, SD, standard deviation.