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. Author manuscript; available in PMC: 2016 Mar 1.
Published in final edited form as: Res Social Adm Pharm. 2014 Oct 8;11(2):253–264. doi: 10.1016/j.sapharm.2014.08.005

Table 4.

Predictors of Medication-Related Problemsa

Dependent Variable Significant Predictorsb P-value Parameter Estimate of B (95% Confidence Interval) Beta R2 R2Adj Change in R2
Total number of MRPs Step 1 Total number of vitamins, herbals, supplements 0.002 −0.17 (−0.28, −0.06) −0.24 0.19 0.18 0.19
Household incomec 0.008 0.51 (0.13, 0.89) 0.19
Total daily medication doses < 0.001 0.10 (0.06, 0.14) 0.36
Step 2 Scale score 0.031 0.04 (0.00, 0.07) 0.15 0.21 0.20 0.02
a

Overall model, p < 0.001

b

Other variables included but removed step-wise: sex, marital status, education, ability to pay for medications

c

Item asked, “How would you describe your household income?; 1=Comfortable, 2=Just enough to make ends meet, 3=Do not have enough to make ends meet.”