Table 2.
Results of a multivariable logistic regression analysis investigating factors associated with the use of the SwissCovid app
| Characteristic | Value, odds ratio (95% CIs) | |||
|
|
Univariable; full sample (N=1511) |
Multivariable; full sample (N=1511) |
Multivariable; random subsample interviewed on trust in government and science (n=712) | |
| Age (per 10 years) | 1 (0.99; 1.01) | 0.99 (0.92, 1.06) | 1.09 (0.98, 1.22) | |
| Female Gender (vs male) | 1.06 (0.87, 1.30) | 1.10 (0.89, 1.36) | 0.94 (0.68, 1.30) | |
| Partnership status | ||||
|
|
No partner | refa | N/Ab | N/A |
|
|
Living with partner | 1.19 (0.95, 1.50) | N/A | N/A |
|
|
Not living with partner | 0.85 (0.56, 1.27) | N/A | N/A |
| Has children (vs not) | 0.87 (0.63, 1.21) | N/A | N/A | |
| Citizenship status | ||||
|
|
Swiss | ref | ref | ref |
|
|
Swiss and other | 0.58 (0.40, 0.85) | 0.58 (0.40, 0.86) | 0.52 (0.28, 0.96) |
|
|
Non-Swiss | 0.63 (0.45, 0.89) | 0.61 (0.43, 0.87) | 0.68 (0.39, 1.20) |
| Language region | ||||
|
|
German | ref | ref | ref |
|
|
French | 0.69 (0.53, 0.89) | 0.61 (0.46, 0.80) | 0.56 (0.37, 0.84) |
|
|
Ticino | 0.79 (0.58, 1.08) | 0.78 (0.57, 1.08) | 0.90 (0.54, 1.51) |
| Education | ||||
|
|
Only mandatory schooling | ref | ref | ref |
|
|
Completed professional education | 1.44 (0.92, 2.26) | 1.32 (0.83, 2.12) | 1.23 (0.57, 2.63) |
|
|
University or university of applied sciences | 1.85 (1.18, 2.90) | 1.50 (0.94, 2.42) | 1.58 (0.73, 3.45) |
| Currently employed (vs unemployed) | 0.91 (0.73, 1.14) | N/A | N/A | |
| Monthly household income | ||||
|
|
≤CHF 6000 (US $6600) | ref | ref | ref |
|
|
CHF 6000-10,000 (US $6600-11,000) | 1.44 (1.10, 1.88) | 1.29 (0.97, 1.71) | 1.14 (0.75, 1.74) |
|
|
>CHF 10,000 (US $11,000) | 2.20 (1.64, 2.95) | 1.92 (1.40, 2.64) | 1.53 (0.94, 2.48) |
|
|
No answer | 1.31 (0.96, 1.79) | 1.18 (0.85, 1.63) | 1.06 (0.66, 1.71) |
| Nonsmoker (vs smoker) | 1.40 (1.09, 1.81) | 1.32 (1.01, 1.71) | 1.51 (1.02, 2.25) | |
| Self-reported chronic illnessc (vs none) | 1.08 (0.85, 1.36) | 1.11 (0.87, 1.43) | 0.88 (0.61, 1.27) | |
| Use of protective masks | ||||
|
|
Always or most of the time | ref | ref | ref |
|
|
Sometimes | 0.88 (0.71, 1.10) | 0.75 (0.60, 0.96) | 0.77 (0.54, 1.10) |
|
|
Rarely or never | 0.32 (0.18, 0.57) | 0.28 (0.15, 0.52) | 0.32 (0.12, 0.86) |
| Staying at home except for essential tasks | ||||
|
|
Always or most of the time | ref | N/A | N/A |
|
|
Sometimes | 1.17 (0.91, 1.51) | N/A | N/A |
|
|
Rarely or never | 0.96 (0.73, 1.25) | N/A | N/A |
| Frequency of internet use | ||||
|
|
Once daily or several times a day | ref | ref | ref |
|
|
Once weekly or several days per week | 0.55 (0.38, 0.78) | 0.55 (0.38, 0.80) | 0.59 (0.35, 1.00) |
|
|
Never or less than once weekly | 0.35 (0.16, 0.79) | 0.37 (0.16, 0.85) | 0.32 (0.11, 0.95) |
| Trust in government or health authoritiesd | ||||
|
|
Little | ref | N/A | ref |
|
|
Somewhat | 2.16 (1.08, 4.32) | N/A | 1.71 (0.82, 3.58) |
|
|
Large | 4.21 (2.22, 7.97) | N/A | 3.13 (1.58, 6.22) |
| Trust in scienced | ||||
|
|
Little | ref | N/A | N/A |
|
|
Somewhat | 1.59 (0.84, 3.01) | N/A | N/A |
|
|
Large | 3.13 (1.71, 5.73) | N/A | N/A |
aref: reference value.
bN/A: data not applicable or not included because it did not improve model fit
cPresence of chronic illness was defined based on self-reporting of at least one of the following conditions: asthma, chronic obstructive pulmonary disease, diabetes, hypertension, cardiovascular disease, stroke, and cancer.
dData only available in a randomly selected split-sample, including 47% (712/1511) of the full study population.