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. 2020 Apr 9;138(2):112–117. doi: 10.1590/1516-3180.2019.0428.R1.09122019

Table 3. Association of dyspnea (from the modified Medical Research Council scale) with physical performance (from the Short Physical Performance Battery) among older adults. Macapá (AP), Brazil, 2017 (n = 411).

Variables SPPB
B SD β T P 95% CI R2

  • Lower

  • limit

  • Upper

  • limit
Dyspnea (mMRC)
Model 1 -0.549 0.113 -0.233 -4,848 < 0.001 -0.771 -0.326 0.054
Model 2 -0.348 0.109 -0.148 -3,180 0.002 -0.562 -0.133 0.172
Model 3 -0.261 0.107 -0.111 -2,436 0.015 -0.472 -0.050 0.302

SPPB = Short Physical Performance Battery; B = non-standardized coefficients; SD = standard deviation; β = standardized coefficients; T = t test; 95% CI = 95% confidence interval; R2 = coefficient of determination; mMRC = modified Medical Research Council scale; Model 1 = unadjusted analysis; Model 2 = analysis adjusted for frailty condition; Model 3 = analysis adjusted for socioeconomic and health variables (age, sex, number of diseases and smoking habit) and frailty status; P < 0.05.