. Author manuscript; available in PMC: 2019 Jan 1.

Published in final edited form as: J Geriatr Oncol. 2017 Aug 24;9(1):68–73. doi: 10.1016/j.jgo.2017.08.002

Table 2.

Median skeletal muscle measures and Prevalence Ratios^† for frailty (frail & pre-frail combined).

	Median			Unadjusted Prevalence Ratio (95% CI)	Adjusted (for age & gender) Prevalence Ratio (CI)	Adjusted (for age, gender, & BMI) Prevalence Ratio (CI)
	Robust (n=85)	Pre-frail (n=43)	Frail (n=34)	Unadjusted Prevalence Ratio (95% CI)	Adjusted (for age & gender) Prevalence Ratio (CI)	Adjusted (for age, gender, & BMI) Prevalence Ratio (CI)
Skeletal Muscle Index (cm²/m²)	41.9	40.0	39.5	1.02 (0.93, 1.13)	0.95 (0.84, 1.07)	1.01 (0.89, 1.14)
Skeletal Muscle Density (HU)	29.4	24.4^**	24.1^**	1.23 (1.13,1.35)^**	1.20 (1.09, 1.32)^**	1.14 (1.00,1.31)
Skeletal Muscle Gauge (AU)	1188	987^**	922^**	1.07 (1.03, 1.12)^*	1.06 (1.01, 1.11)^*	1.04 (0.98, 1.10)

p=<0.05

^**

p=<0.01 as compared to Robust

^†

Prevalence Ratios for pre-frail and frail vs robust are for 5 cm²/m² decrease in skeletal muscle index, 5 HU decrease in skeletal muscle density, and 100 AU decrease in skeletal muscle gauge.

Abbreviations: HU, Hounsfield Units; AU, Arbitrary Units; CI, Confidence Intervals; BMI, Body Mass Index.