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. 2016 Dec 20;18(12):e330. doi: 10.2196/jmir.6482

Table 2.

Predictors of app use and follow-up completion.


Predictors of app use Predictors of follow-up
Any use Use count P value Any follow-up No. of follow-ups P value
ORa (SEb) RRc (SE)
OR (SE) Beta (SE)
Baseline variable










PHQ-9d 1.01 (0.12) 0.79 (0.09) .93 0.90 (0.09) –.23 (0.16) .04

PHQ-disability 0.93 (0.11) 1.27 (0.15) .54 0.96 (0.09) –.17 (0.16) .03

Age 1.06 (0.12) 1.15 (0.12) .61 1.08 (0.10) .29 (0.15) .19

Male 0.89 (0.09) 0.96 (0.09) .25 0.96 (0.08) –.11 (0.14) .67

University education 1.21 (0.13) 1.01 (0.11) .07 1.01 (0.09) .18 (0.14) .92

Married 0.93 (0.10) 0.93 (0.09) .53 0.84 (0.07) –.21 (0.14) .46

Employed 1.09 (0.11) 0.92 (0.09) .42 0.97 (0.08) –.05 (0.14) .39

Racial/ethnic minority 1.04 (0.11) 0.95 (0.09) .70 1.26 (0.11) .25 (0.14) .57

Condition: iPSTe 1.06 (0.21) 1.11 (0.21) .78 1.05 (0.21) –.05 (0.33) .60

Condition: EVOf




0.69 (0.14) –.93 (0.33)
First-use variable










SDSg 0.97 (0.16) 1.30 (0.16) .83 1.29 (0.24) –.06 (0.19) .04

GAD-7h 1.03 (0.17) 0.78 (0.10) .86 0.76 (0.14) –.26 (0.19) .04

AUDIT-Ci 1.03 (0.13) 0.77 (0.06) .80 0.96 (0.14) –.14 (0.15) .001

Psychotic symptoms 1.19 (0.40) 1.02 (0.25) .62 1.34 (0.53) .24 (0.39) .93

Other psychiatric treatment 0.77 (0.21) 1.08 (0.21) .34 0.73 (0.23) –.03 (0.32) .71

aOR: odds ratio.

bSE: standard error.

cRR: rate ratio.

dPHQ-9: 9-item Patient Health Questionnaire.

eiPST: problem-solving therapy app.

fEVO: Project: EVO.

gSDS: Sheehan Disability Scale.

hGAD-7: Generalized Anxiety Disorder 7-item scale.

iAUDIT-C: Alcohol Use Disorders Identification Test.