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. Author manuscript; available in PMC: 2015 Mar 1.
Published in final edited form as: Med Care. 2014 Mar;52(3):194–201. doi: 10.1097/MLR.0000000000000069

Table 2.

Risk of Non-Adherence to Statins by KP.org Refill Use

Adjusted Model 1: Full sample (n=17,760) Adjusted Model 2: DISTANCE survey subsample with additional confounders (n=1,601)
RR (95% CI) Risk Difference (95% CI) RR (95% CI) Risk Difference (95% CI)
No refill function use (reference) --- --- --- ---
Occasional use 1.04 (0.98, 1.10) 0.01 (−0.004, 0.02) 0.88 (0.67, 1.15) −0.03 (−0.10, 0.04)
Exclusive use 0.71 (0.65, 0.78)* −0.06 (−0.08, −0.05)* 0.58 (0.39, 0.86)* −0.10 (−0.17, − 0.04)*
*

p-value <0.05

Model 1 adjusts for baseline medication adherence age, sex, race, number of medications, and outpatient utilization visits

Model 2 adjusts for baseline medication adherence, age, sex, race, health literacy, education, limited English proficiency, marital status, number of medications, and outpatient utilization visits

RD=Risk Difference

RR=Relative Risk