Table 3.
Results From Adjusted Cox Proportional Hazard Models (Expressed as Hazard Ratio [95% Confidence Interval]) Exploring the Relationship of Sarcopenia and Low Walking Speed With Mortality According to Body Mass Index (BMI, in kg/m2) Groups
| No Sarcopenia | Sarcopenia | |
| BMI < 25 | 1 (reference group), n/N = 18/81 | 1.25 (0.69–2.25), n/N = 66/168 |
| BMI 25–29.9 | 1.17 (0.65–2.09), n/N = 63/307 | 1.24 (0.65–2.37), n/N = 30/94 |
| BMI ≥ 30 | 0.99 (0.53–1.84), n/N = 40/188 | 1.18 (0.46–3.02), n/N = 10/25 |
| No low walking speed | Low walking speed | |
| BMI < 25 | 1 (reference group), n/N = 27/163 | 2.29 (1.36–3.88)*, n/N = 52/85 |
| BMI 25–29.9 | 1.33 (0.77–2.27), n/N = 37/289 | 1.98 (1.17–3.35)*, n/N = 58/126 |
| BMI ≥ 30 | 1.09 (0.58–2.07), n/N = 20/146 | 2.15 (1.22–3.78)*, n/N = 36/79 |
Notes: n/N, number of events/total number of participants. Sarcopenia defined according to the lowest gender-specific tertile of the residuals of fat- and height-adjusted muscle mass: men, −3.38363; women, −5.75560. Low walking speed defined according to the lowest gender-specific tertile of walking speed: men, 1.1475 m/s; women, 0.9845 m/s. Analyses are adjusted for age, gender, site, education, Mini-Mental State Examination score, Center for Epidemiological Studies-Depression scale score, physical activity, congestive heart failure, coronary artery disease, hypertension, peripheral artery disease, respiratory disease, osteoarthritis, stroke, interleukin-6 (log value), C-reactive protein (log value), and tumor necrosis factor-α (log value).
p < .05.