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. 2016 Jan;2(1):14–21. doi: 10.1136/bmjinnov-2015-000098

Table 2.

Baseline demographics*

Assessment adherence Adherent Non-adherent p Value Effect size
PHQ-9‡ 13.25 (5.0) 14.5 (4.9) 0.001 0.24
Age‡ 34.7 (11.4) 30.7 (10.8) <0.001 0.36
Education§ <0.01 0.25
 <12 years 61 (17.09) 95 (25.54)
 College 206 (57.70) 211 (56.72)
 Graduate 90 (25.21) 66 (17.74)
Gender¶ 80 (22.4) 75 (20.2) 0.46 0.11
Minority** 130 (36.4) 161 (43.3) 0.06 0.23
Income†† 0.06 0.33
 $20 000 or less 81 (39.32) 91 (47.40)
 $20 000–$40 000 50 (24.27) 52 (27.08)
 $40 000–$60 000 34 (16.50) 30 (15.62)
 $60 000–$80 000 21 (10.19) 7 (3.65)
 $80 000–$100 000 6 (2.91) 6 (3.12)
 $100 000+ 14 (6.80) 6 (3.12)

*Means and SDs unless otherwise specified.

†All effect sizes converted to Cohen's d.

‡Welch t test.

§Pearson χ2 test; number and percentage.

¶Pearson χ2 test; number and percentage of males.

**Pearson χ2 test; number and percentage of ethnic minorities.

††Fisher's exact test; number and percentage.

PHQ, Patient Health Questionnaire.