Table 1 Sociodemographic and medical characteristics of 80-year-old subjects based on survival during 5.5-year follow-up period

Sex

   Female

344 (81.9%)

76 (18.1%)

0.001

   Male

196 (70.8%)

81 (29.2%)

Marital status^a

   Currently married

253 (74.2%)

88 (25.8%)

0.022

   Currently unmarried

268 (80.9%)

63 (19.1%)

Place of residence^b

   Ward

149 (85.6%)

25 (14.4%)

0.008

   City

215 (76.2%)

67 (23.8%)

   Town/village

170 (73.3%)

62 (26.7%)

Medical history

   CVD

90 (76.3%)

28 (23.7%)

0.358

   Cancer

2 (66.7%)

1 (33.3%)

0.528

   Pneumonia

13 (72.2%)

5 (27.7%)

0.364

Medical examinations

   Serum total cholesterol (mg/dL)

208.1 (37.4)

196.8 (40.1)

0.002

   Fasting serum glucose (mg/dL)

116.5 (44.5)

138.9 (74.6)

< 0.001

   Serum albumin (g/dL)

4.3 (0.29)

4.1 (0.35)

< 0.001

Systolic blood pressure (mmHg)

150.8 (23.6)

149.2 (21.8)

0.463

   Diastolic blood pressure (mmHg)

79.3 (12.5)

77.5 (11.7)

0.117

Disease risk factors

   Body mass index

22.9 (3.3)

21.9 (3.2)

0.002

   Regular physical activity^c

Yes

300 (77.9%)

85 (22.1%)

0.614

No

212 (76.3%)

66 (23.7%)

   Regular checkup by family doctor^d

Yes

430 (77.5%)

125 (22.5%)

0.688

No

81 (75.7%)

26 (24.3%)

   Self-rated general health^e

Very good

224 (79.2%)

59 (20.8%)

0.140

Good

245 (78.3%)

68 (21.7%)

Moderate

61 (69.3%)

27 (30.7%)

   Smoking habit^c

Smoker

173 (68.4%)

80 (31.6%)

< 0.001

Non-smoker

358 (82.9%)

74 (17.1%)

   Daily alcohol consumption^f

Non-drinker

221 (75.4%)

72 (24.6%)

Drinker

294 (79.0%)

78 (21.0%)

0.156