Table 3.

Multivariate Regression Models Show the Predictive Strengths of Each One of Non-Pulmonary Factors with Worsening Transitions vs Improving Transitions and Non-Transitions in GOLD 2011 (N = 39 1-Year Transitions)

Predictors
Non-Pulmonary variables
Handgrip strength (kg)	0.99 (0.94–1.04) 0.686
Quadriceps strength (kg)	0.87 (0.76–0.99) 0.036
Elbow strength (kg)	0.89 (0.78–1.02) 0.100
6-Minute walk test (m)	0.99 (0.99–1.00) 0.132
SPPB (range 0 ± 12)	0.85 (0.69–1.03) 0.109
5STS (range 0 ± 4)	0.81 (0.58–1.14) 0.236
BODE index (range 0 ± 10)	1.20 (1.00–1.44) 0.047
Self-reported questionnaire (0 ± 100)	1.02 (1.00–1.05) 0.034

Notes: Values are odd ratios (95% confidence intervals) and P value. Each predictor was adjusted for age, sex, BMI, and significant variables from model 2 (Table 2).

Abbreviations: SPPB, short physical performance battery; 5STS, five-repetition sit-to-stand test; BMI, body mass index.