Table 3.
Imputed linear regressions with physical activity as outcome. Univariate and confounder-adjusted (ie, age, sex, multiple sclerosis duration in years, and continuous forms of Expanded Disability Status Scale and BMI assessed at baseline) multivariable regression models to evaluate the association of physical activity assessed during the last week of the study with the Barriers to Health Promoting Activities for Disabled Persons scale assessed at the end of the study, based on the imputed data set (n=45).
| Models | Univariate imputed data analysis | Multivariable imputed data analysisa | ||||
| Last week of the study | ||||||
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1. ≥10,000 steps/db | |||||
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Odds ratio (95% CI) | 0.93 (0.82 to 1.06) | 0.88 (0.74 to 1.04) | ||
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P value | .29 | .14 | ||
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2. ≥10,000 steps/d controlled for steps/d at the end of the rehabilitation | |||||
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Odds ratio (95% CI) | 0.86 (0.73 to 1.02) | 0.82 (0.67 to 1.00) | ||
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P value | .09 | .05 | ||
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3. ≥10,000 steps/d controlled for steps/d and barriers score at the end of the rehabilitation | |||||
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Odds ratio (95% CI; P value) | 0.87 (0.71 to 1.05) | 0.86 (0.69 to 1.06) | ||
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P value | .14 | .15 | ||
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4. Steps/d | |||||
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β coefficient (95% CI) | −48.32 (−259.08 to 162.44) | −69.43 (−275.33 to 136.47) | ||
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P value | .65 | .50 | ||
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5. Steps/d controlled for steps/d at the end of the rehabilitation | |||||
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β coefficient (95% CI) | −164.28 (−321.17 to −7.38)c | −218.84 (−386.82 to −50.86) | ||
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P value | .04 | .01 | ||
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6. Steps/d controlled for steps/d and barriers score at the end of the rehabilitation | |||||
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β coefficient (95% CI) | −151.92 (−307.87 to 4.04) | −210.27 (−381.54 to −39.00) | ||
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P value | .06 | .02 | ||
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7. ≥150 min of MVPAd/wke | |||||
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Odds ratio (95% CI) | 0.97 (0.87 to 1.08) | 0.97 (0.86 to 1.11) | ||
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P value | .59 | .67 | ||
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8. ≥150 min of MVPA/wk controlled for min of MVPA/wk at the end of the rehabilitation | |||||
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Odds ratio (95% CI) | 0.94 (0.82 to 1.07) | 0.95 (0.81 to 1.12) | ||
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P value | .34 | .52 | ||
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9. ≥150 min of MVPA/wk controlled for min of MVPA/wk and barriers score at the end of the rehabilitation | |||||
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Odds ratio (95% CI) | 0.95 (0.82 to 1.09) | 0.95 (0.81 to 1.13) | ||
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P value | .44 | .58 | ||
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10. Min of MVPA/wk | |||||
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β coefficient (95% CI) | −8.67 (−24.07 to 6.72) | −12.19 (−27.28 to 2.9) | ||
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P value | .26 | .11 | ||
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11. Min of MVPA/wk controlled for min of MVPA/wk at the end of the rehabilitation | |||||
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β coefficient (95% CI) | −11.64 (−24.92 to 1.65) | −15.04 (−28.99 to −1.1) | ||
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P value | .08 | .04 | ||
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12. Min of MVPA/wk controlled for min of MVPA/wk and barriers score at the end of the rehabilitation | |||||
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β coefficient (95% CI) | −10.85 (−24.26 to 2.56) | −14.41 (−28.72 to −0.1) | ||
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P value | .11 | .048 | ||
aAdjusted for age, sex, BMI, multiple sclerosis duration, and Expanded Disability Status Scale.
bSteps/d corresponds to the mean number of steps per day and per individual.
cStatistically significant effect sizes (P<.05) are marked in italics.
dMVPA: moderate to vigorous physical activity.
eMin of MVPA/wk corresponds to the sum of minutes of MVPA during the week.