Table 4

Rate of Treatment Adjustment (Number of Adjustments Over 12 Months)

Therapeutic ClassRate (95% CI) Relative Ratea (95% CI)
InterventionUsual Care
Antidepressant3.37 (2.92–3.89)0.53 (0.34–0.82)6.20b (3.88–9.90)
Insulin3.26 (2.43–4.36)1.02 (0.67–1.55)2.97b (1.83–4.83)
Oral hypoglycemic0.62 (0.44–0.88)0.34 (0.23–0.50)1.80c (1.07–3.01)
Antihypertensive2.33 (1.86–2.92)1.11 (0.81–1.51)1.86b (1.28–2.71)
Lipid lowering0.81 (0.64–1.03)0.55 (0.42–0.72)1.56c (1.10–2.20)
  • Note: Treatment adjustment defined as (1) an increase in the number of medication classes prescribed, (2) a change in dosage of at least 1 ongoing medication class, (3) a switch to a medication in a different class, or (4) a switch to a different medication within the same class over the 12-month intervention period. Medication adjustment includes initiations and subsequent treatment changes.

  • a Adjusted for baseline Poisson regressions with robust (Huber-White) standard errors predicting the rate of adjustments (baseline to 12 months) within each therapeutic class.

  • b P value <.001.

  • c P value <.05.