Table 2.

Multivariate analysis to explain the use of health and fitness apps.

Predictor		Odds ratio (5%-95% CI)	P value
Gender
	Male	Referencea
	Female	1.37 (0.86-2.20)	.19
Age band (years)
	13-18	Reference
	18-30	1.93 (0.97-3.89)	.06
	30-40	1.53 (0.59-4.05)	.38
	40-50	1.41 (0.53-3.77)	.49
	50-65	0.63 (0.12-2.86)	.57
	≥65	1.68 (0.19-11.47)	.62
Marital status
	Married	Reference
	Separated	1.64 (0.55-4.96)	.37
	Single	2.22 (1.05-4.75)	.04b
	Widow	1.17 (0.03-33.55)	.93
Education level (years)
	0-10	Reference
	>10	1.95 (1.12-3.45)	.02
Socioeconomic level
	Q1 (least deprived)	Reference
	Q2	2.02 (0.84-4.92)	.12
	Q3	1.08 (0.45-2.64)	.86
	Q4	1.42 (0.61-3.33)	.41
	Q5 (most deprived)	1.34 (0.56-3.24)	.52
Mean digital literacy
	Q1 (0-4.17)	Reference
	Q2 (4.17-5.67)	6.74 (2.90-17.40)	<.001
	Q3 (5.67-6.83)	10.30 (4.28-27.56)	<.001
	Q4 (6.83-10)	11.52 (4.78-30.87)	<.001
Overall health
	Q1 (0-70)	Reference
	Q2 (70-80)	1.05 (0.56-1.99)	.87
	Q3 (80-90)	0.87 (0.46-1.63)	.67
	Q4 (90-100)	0.86 (0.42-1.76)	.69
Smoking status
	Never smokers	Reference
	Former smokers	1.83 (0.97-3.53)	.07
	Current smokers	0.84 (0.34-2.05)	.70
Anxiety symptoms
	No	Reference
	Yes	1.12 (0.64-1.95)	.69
Depression symptoms
	No	Reference
	Yes	0.32 (0.12-0.83)	.02
Asthma control
	Well-controlled	Reference
	Partially/uncontrolled	0.89 (0.54-1.44)	.62
Asthma exacerbation in the past year
	0	Reference
	≥1	0.99 (0.56-1.75)	.96
Unplanned appointment in the past year
	0	Reference
	≥1	1.01 (0.52-1.91)	.99
Inpatient admission in the past year
	0	Reference
	≥1	1.73 (0.37-8.03)	.48

^aConfidence intervals could not be calculated. Reference means the category used as reference (ie, to which other categories are compared). The Hosmer–Lemeshow Test yielded a P value of .21, χ²₈=10.9, Aikake Information Criterion of 542, and coefficient of determination (R²) of 48%.

^bItalicized P values are significant.