. Author manuscript; available in PMC: 2017 Aug 1.

Published in final edited form as: J Behav Med. 2016 Apr 9;39(4):633–641. doi: 10.1007/s10865-016-9741-y

Table 4.

Hierarchical multiple regression models presenting the unique contribution of the MIAS on HbA_1C.

	ARMS-D			SDSCA-MS			SDSCA-IS

Predictors	Step 1 ARMS-D	Step 2 MIAS	Step 3 a priori covariates	Step 1 SDSCA-MS	Step 2 MIAS	Step 3 a priori covariates	Step 1 SDSCA-IS	Step 2 MIAS	Step 3 a priori covariates
Step 1 ΔR²	.09^***			.03^‡			.02^‡
Adherence Measure β	−.30^***	−.21^*	−.09	−.16^*	−.05	−.10	−.15^‡	−.07	−.11
Step 2 ΔR²		.01			.05^**			.05^**
MIAS β		−.13	−.20^‡		−.25^**	−.22^**		−.25^**	−.22^**
Step 3 ΔR²			.13^**			.16^**			.16^**
Age β			−.27^**			−.30^***			−.29^***
Gender β			−.002			−.02			−.02
Race β			.19^*			.20^*			.20^**
Education β			.04			−.06			−.07
Income β			.005			.02			.02
Insurance (1=Public) β			−.09			−.09			−.08
Insurance (1=Private) β			.06			.07			.07
Duration of diagnosed DM β			.14			.15^‡			.15^‡
BMI β			−.14^‡			−.16^‡			−.17^*
Total R²	.09	.10	.23	.03	.08	.23	.02	.08	.23

Notes. MIAS=Morisky Insulin Adherence Scale, HbA_1C=hemoglobin A_1C, ARMS-D=Adherence to Refills and Medications Scale for Diabetes, SDSCA-MS=Summary of Diabetes Self-Care Activities medications subscale, SDSCA-IS=Summary of Diabetes Self-Care Activities insulin score, β =standardized regression coefficients, HbA_1C=hemoglobin A_1C, p=probability value,

^‡

p<0.09,

p<0.05,

^**

p<0.01,

^***

p<0.001