Skip to main content

Table 2 Comparison of demographic and sleep-related characteristics between non-sarcopenia group and sarcopenia group

From: Sarcopenia is associated with insomnia in Japanese older adults: a cross-sectional study of data from the Nagasaki Islands study

 

Non-sarcopenia

Sarcopenia

P value

N

1310

282

 

Male, n (%)

482 (36.8)

93 (33.0)

0.25

Age years, median (IQR)

73.0 (68.0–78.0)

79.0 (74.0–84.0)

<  0.001

 65–68, n (%)

431 (32.9)

26 (9.2)

<  0.001

 69–73, n (%)

326 (24.9)

56 (19.9)

 

 74–79, n (%)

332 (25.3)

80 (28.4)

 

  > 80, n (%)

221 (16.9)

120 (42.6)

 

BMI kg/m2, median (IQR)

23.1 (21.0–25.2)

20.7 (19.0–22.7)

<  0.001

 BMI ≤20 kg/m2, n (%)

208 (15.9)

111 (39.4)

<  0.001

 BMI 20–25 kg/m2, n (%)

753 (57.5)

141 (50.0)

 

 BMI > 25 kg/m2, n (%)

349 (26.6)

30 (10.6)

 

Habitual drinker, n (%)

35 (2.7)

3 (1.1)

0.13

Smoking status

 Never, n (%)

909 (69.4)

208 (73.8)

0.29

 Past, n (%)

309 (23.6)

60 (21.3)

 

 Current, n (%)

92 (7.0)

14 (5.0)

 

Sleep duration

  < 6 h, n (%)

70 (5.3)

9 (3.2)

<  0.001

 6–7 h, n (%)

190 (14.5)

26 (9.3)

 

 7–8 h, n (%)

366 (27.9)

63 (22.4)

 

 8–9 h, n (%)

389 (29.7)

93 (33.1)

 

  ≥ 9 h, n (%)

295 (22.5)

90 (32.0)

 

Insomnia symptoms

 DIS, n (%)

336 (25.7)

96 (34.2)

0.005

 DMS, n (%)

452 (34.5)

140 (49.6)

<  0.001

 DIMS, n (%)

650 (49.6)

194 (69.0)

<  0.001

K6 global score ≥ 5, n (%)

102 (7.8)

32 (11.3)

0.06

  1. Abbreviations: BMI body mass index, DIS difficulty initiating sleep, DIMS difficulty initiating and/or maintaining sleep, DMS difficulty maintaining sleep, IQR interquartile range