Table 3.

Associations between MATCH and validity measures.

	Willingness		Ability		Worthwhile		MATCH
	r	p	r	p	r	p	High	Low	p	Effect size d
Convergent
Psychosocial
Diabetes distress (regimen distress)	0.05	0.58	−0.48	<0.001	−0.31	<0.001	2.0 (0.8)	2.8 (1.0)	<0.001	0.89
Diabetes self-efficacy	0.07	0.18	0.55	<0.001	0.17	0.004	7.6(1.5)	6.4(1.7)	<0.001	0.75
Illness perception: personal control	0.23	<0.001	0.40	<0.001	−0.40	<0.001	4.4 (0.5)	3.9 (0.6)	<0.001	0.91
Attitudes toward specific change
Confidence making this change	0.22	<0.001	0.44	<0.001	0.20	<0.001	7.4 (2.0)	5.8 (2.2)	<0.001	0.76
Interested in learning good ways to make this change.	0.48	<0.001	0.28	<0.001	−0.10	0.10	4.7 (0.7)	4.2 (0.8)	<0.001	0.67
I don’t think it will do any good to make this change.	−0.27	<0.001	−0.25	<0.001	0.40	<0.001	1.4 (0.5)	1.9 (0.7)	<0.001	0.82
I have too many other things going on in my life to make this change now.	−0.20	<0.001	−0.49	<0.001	−0.23	<0.001	2.1 (0.9)	2.8 (1.1)	<0.001	0.70
Behavioral Self-management
Healthy General Diet	0.09	0.12	0.31	<0.001	0.01	0.81	3.7 (2.2)	3.0 (2.0)	0.03	0.33
Physical Activity	0.06	0.28	0.20	<0.001	0.07	0.22	3.0 (2.2)	2.5(2.2)	0.02	0.22
Missed Medication days (past week)	−0.08	0.16	−0.21	<0.001	−0.15	0.008	0.6 (1.1)	1.1 (2.1)	0.005	0.30
Discriminant
Depression symptoms (PHQ-8)	−0.08	0.15	−0.31	<0.001	−0.22	<0.001	5.5 (4.3)	8.3 (5.5)	<0.001	0.57

Note: Cut-point for each MATCH subscale based on the face validity of the scale response options (low = mean subscale score of 1.0 to 3.4; high = 3.5 to 5.0); with “high MATCH” scores defined as reaching the threshold for “high” on all three subscales. Bold font indicates MATCH areas hypothesized to associate with specific convergent validity variables.