Table 2.
Final multivariatea generalized ordered logistic regression model showing factors significantly associated with increasing overall engagement during follow-up (categorized as low, moderate, or high platform engagement; N=1238).
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ORb (95% CI) | P valuec | ||||
| Variables meeting the proportional odds assumptiond | ||||||
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Country | .02 | ||||
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Netherlands (refe) | 1 | N/Af | ||
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France | 1.41 (0.98-2.02) | .07 | ||
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Finland | 1.55 (1.16-2.06) | .003 | ||
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Trying to change lifestyle? | .002 | ||||
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No plans (ref) | 1 | N/A | ||
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Long-term plans | 1.20 (0.70-2.07) | .51 | ||
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Short-term plans | 2.25 (1.33-3.80) | .002 | ||
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Short-term acting | 1.51 (0.92-2.50) | .11 | ||
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Long-term acting | 2.02 (1.26-3.25) | .004 | ||
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Computer use in last 4 weeks before baseline visit | <.001 | ||||
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None (ref) | 1 | N/A | ||
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<7 hours/week | 5.39 (2.66-10.95) | <.001 | ||
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≥7 hours/week | 6.58 (3.21-13.49) | <.001 | ||
| Variables not meeting the proportional odds assumptiong | ||||||
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Low engagement (ref) vs moderate and high engagement | |||||
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Sex (male) | 1.20 (0.84-1.72) | .31 | ||
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Cognitive z score | 1.67 (1.26-2.21) | <.001 | ||
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Low and moderate engagement (ref) vs high engagement | |||||
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Sex (male) | 0.77 (0.60-0.98) | .03 | ||
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Cognitive z score | 0.99 (0.81-1.22) | .95 | ||
aThe following baseline variables were included in the initial multivariate model but did not remain significantly associated with engagement following a backward stepwise selection procedure: age, education, current smoking, physical status (Short Physical Performance Battery), depressive symptoms (Geriatric Depression Scale), anxiety (Hospital Anxiety and Depression Scale), and nutrition score.
bOR: odds ratio.
cP values in italics are overall Wald tests for categorical variables.
dFor independent variables meeting the proportional odds assumption, the relationship between each pair of outcome categories (ie, moderate and high engagement vs low engagement and high engagement vs low and moderate engagement) is the same; therefore, only 1 OR is calculated per variable.
eref: reference.
fN/A: not applicable.
gFor independent variables not meeting the proportional odds assumption, separate ORs are calculated between each pair of outcome categories.