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. 2020 Apr 13;8(4):e13657. doi: 10.2196/13657

Table 4.

Release version: participant characteristics by sex.

Characteristics Men, (N=979) (23.08%) Women, (N=3263) (76.92%) Total (N=4242) P valuea
Age (years), mean (SD, 95% CI) 74.75 (6.13, 74.36-75.13) 72.58 (6.61, 72.35-72.81) 73.08 (6.56, 72.88-73.28) <.001
BMI (kg/m2), mean (SD, 95% CI) 28.24 (4.39, 27.96-28.51) 29.46 (5.73, 29.26-29.66) 29.18 (5.48, 29.01-29.34) <.001
Nutritional state, n ( %) <.001

Underweight (BMI<20 kg/m2) 5 (0.57) 14 (0.47) 19 (0.50)

Normal (BMI 20-24.9 kg/m2) 185 (21.05) 540 (18.31) 725 (18.94)

Overweight (BMI: 25-29.9 kg/m2) 418 (47.55) 1194 (40.49) 1612 (42.11)

Obese (BMI≥30 kg/m2) 271 (30.83) 1201 (40.73) 1472 (38.45)
Calf circumference (cm), mean (SD, 95% CI) 36.90 (3.64, 35.91-36.16) 36.04 (3.64, 35.91-36.16) 36.24 (3.64, 36.13-36.35) <.001
Knee height (cm), mean (SD, 95% CI) 49.17 (4.70, 48.87-4946) 45.33 (4.31, 45.18-45.48) 46.22 (4.69, 46.07-46.36) <.001
Hip circumference (cm), mean (SD, 95% CI) 101.86 (9.98, 101.24-102.49) 103.95 (11.66, 103.55-104.35) 103.46 (11.33, 103.12-103.81) <.001
Handgrip strength (kg), mean (SD, 95% CI) 33.94 (9.55, 33.34-34.54) 20.82 (7.17, 20.58-21.07) 23.85 (9.55, 23.56-24.14 <.001
Gait speed (m/sec), mean (SD, 95% CI) 0.93 (0.32, 0.91-0.96) 0.86 (0.27, 0.85-0.87) 0.88 (0.28, 0.87-0.89) <.001
Five chair-stands time (seconds), mean (SD, 95% CI) 11.80 (3.63, 11.39-12.22) 12.40 (4.18, 12.14-12.65) 12.26 (4.07, 12.04-12.48) .03
Sarcopenia diagnosis, % (95% CI) 26.66 (23.91-29.55) 23.48 (22.03-24.97) 24.21 (22.93-25.53) .041

aBased on t test except nutritional state and sarcopenia diagnosis, which was based on Pearson Chi-square test.