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. 2023 May 31;25:e46721. doi: 10.2196/46721

Table 2.

Weighted estimates of odds ratio in logistic regression models, 2015.a

Characteristic Any use of digital health, aORb (95% CI)

Model 1 Model 2 Model 3
Age (years)

65-69 Reference Reference Reference

70-74 0.75 (0.48-1.18) 0.73 (0.45-1.18) 0.77 (0.46-1.26)

75-79 0.64 (0.40-1.03) 0.66 (0.38-1.12) 0.72 (0.41-1.28)

80-84 0.32 (0.20-0.52)c 0.32 (0.19-0.53) 0.37 (0.21-0.66)

85-89 0.26 (0.15-0.45) 0.28 (0.16-0.49) 0.33 (0.17-0.64)

≥90 0.12 (0.05-0.28) 0.13 (0.05-0.32) 0.18 (0.06-0.48)
Female 1.08 (0.78-1.49) 1.06 (0.75-1.49) 1.04 (0.69-1.56)
Race and ethnicity

White Reference Reference Reference

Black 0.53 (0.34-0.84) 0.54 (0.34-0.87) 0.57 (0.35-0.93)

Hispanic 0.27 (0.10-0.75) 0.27 (0.10-0.71) 0.29 (0.12-0.70)

Other 0.58 (0.21-1.66) 0.62 (0.23-1.72) 0.67 (0.25-1.81)
Married or partnered 1.06 (0.76-1.47) 1.08 (0.76-1.52) 1.05 (0.74-1.49)
Education level

Less than high school 0.10 (0.05-0.22) 0.10 (0.05-0.22) 0.11 (0.05-0.24)

High school graduate 0.25 (0.18-0.34) 0.24 (0.17-0.34) 0.25 (0.18-0.36)

Some college 0.53 (0.39-0.72) 0.52 (0.38-0.71) 0.55 (0.40-0.75)

College graduate or higher Reference Reference Reference
Annual income (US $)

<15,000 Reference Reference Reference

15,000-29,999 1.40 (0.77-2.53) 1.37 (0.75-2.49) 1.42 (0.79-2.55)

30,000-44,999 2.32 (1.13-4.74) 2.25 (1.06-4.75) 2.27 (1.09-4.75)

45,000-60,000 2.52 (1.14-5.56) 2.53 (1.13-5.68) 2.52 (1.15-5.54)

>60,000 3.13 (1.57-6.24) 2.81 (1.35-5.87) 2.80 (1.35-5.80)
Self-rated health

Excellent N/Ad Reference Reference

Very good N/A 0.83 (0.53-1.31) 0.84 (0.54-1.33)

Good N/A 0.76 (0.45-1.28) 0.81 (0.48-1.37)

Fair N/A 0.70 (0.35-1.37) 0.74 (0.38-1.47)

Poor N/A 0.88 (0.31-2.49) 0.99 (0.34-2.91)
Number of comorbidities N/A 1.14 (1.02-1.27) 1.15 (1.04-1.27)
Number of ADLe limitations N/A 0.88 (0.78-0.99) 0.93 (0.81-1.06)
Dementia N/A 0.15 (0.07-0.34) 0.16 (0.07-1.06)
Anxiety and depression N/A 0.96 (0.88-1.05) 0.96 (0.88-1.05)
Gait speed N/A N/A 1.20 (1.02-1.40)
Balance test N/A N/A 1.10 (0.94-1.29)
Chair test N/A N/A 0.94 (0.83-1.08)
Grip strength score N/A N/A 0.97 (0.84-1.12)

aModels were adjusted for the complex survey design.

baOR: adjusted odds ratio.

cItalicized values mean P<.05.

dN/A: not applicable.

eADL: activities of daily living.