Skip to main content
. Author manuscript; available in PMC: 2018 Oct 1.
Published in final edited form as: J Am Geriatr Soc. 2017 Aug 11;65(10):2251–2256. doi: 10.1111/jgs.15037

Table 2.

Association of individual baseline accelerometry measures with MMD and PMMD separately.

Event Model 1 Model 2 Model 3 Model 4
MMD Minutes/day < 100 cpm 1.24 (1.18, 1.31) 1.23 (1.17, 1.29) 1.12 (1.07, 1.18) 1.10 (1.05, 1.17)
Minutes/day > 1039 cpm 0.31 (0.23, 0.43) 0.34 (0.25, 0.47) 0.65 (0.48, 0.87) 0.69 (0.51, 0.94)
Activity counts/day 0.88 (0.85, 0.91) 0.89 (0.86, 0.91) 0.94 (0.91, 0.97) 0.95 (0.92, 0.98)
Steps/day 0.74 (0.71, 0.78) 0.75 (0.71, 0.79) 0.83 (0.79, 0.88) 0.85 (0.80, 0.89)
Peak cadence 0.95 (0.94, 0.95) 0.95 (0.94, 0.96) 0.97 (0.96, 0.98) 0.97 (0.96, 0.98)
5+ min bouts 0.93 (0.91, 0.94) 0.93 (0.91, 0.95) 0.96 (0.94, 0.98) 0.97 (0.95, 0.99)
10+ min bouts 0.85 (0.81, 0.89) 0.86 (0.82, 0.90) 0.92 (0.88, 0.96) 0.93 (0.89, 0.98)
PMMD Minutes/day < 100 cpm 1.30 (1.22, 1.39) 1.29 (1.20, 1.38) 1.14 (1.06, 1.23) 1.11 (1.03, 1.19)
Minutes/day ≥ 1039 cpm 0.21 (0.13, 0.34) 0.23 (0.15, 0.37) 0.56 (0.36, 0.87) 0.66 (0.42, 1.03)
Activity counts/day 0.85 (0.82, 0.89) 0.86 (0.82, 0.89) 0.93 (0.89, 0.97) 0.95 (0.91, 0.99)
Steps/day 0.69 (0.64, 0.74) 0.69 (0.64, 0.75) 0.80 (0.74, 0.86) 0.82 (0.76, 0.89)
Peak cadence 0.93 (0.92, 0.94) 0.93 (0.92, 0.95) 0.96 (0.95, 0.97) 0.96 (0.95, 0.98)
5+ min bouts 0.91 (0.89, 0.93) 0.92 (0.89, 0.94) 0.96 (0.93, 0.98) 0.97 (0.94, 0.99)
10+ min bouts 0.81 (0.76, 0.86) 0.82 (0.77, 0.88) 0.90 (0.84, 0.96) 0.92 (0.87, 0.99)

Data expressed as HR (95% CI)

All models adjusted for accelerometer wear time

Model 1 stratifies for site and sex, and adjusts for randomization

Model 2 adjusted for model 1, race, age, and education

Model 3 adjusted for model 2, baseline Short Physical Performance Battery Score, baseline 400 m walking speed, and co-morbidity burden

Model 4 adjusted for model 3, use of anti-hypertensive and lipid-lowering drugs, sleep quality, and depression

Bold if p-value < 0.004 (Bonferroni corrected for multiple accelerometry measures and mobility outcomes)