Table 1.

Characteristics of Primary Care Physicians (N=224) who completed the pre-survey before the on-line CME course and their Chronic Opioid Therapy (COT)^* patients

Physician characteristics	Mean (SD), %, or Median [IQR]
Age, years	48.8 (10.6)
29–44	37.5%
45–54	25.0%
55–68	37.5%
Female	49.6%
Tenure at Group Health, years	13.7 (10.4)
0–5	33.9%
6–20	34.0%
21–40	32.1%
Panel± size	972.4 (301.8)
<800	31.3%
800–1100	31.7%
>1100	37%
Family practice specialty	95.5%
Date of survey
April–June 2011	53.1%
July–Sept 2011	33.9%
Oct–Dec 2011	13.0%
COT Patient characteristics∞
Age, years	58.0 [54.1–61.6]
Female	63.3% [50.0–77.3]
Physician COT prescribing characteristics£
Daily opioid MED, mg.β	39.4 [28.0–53.2]
Receiving 120+ mg. MED/day	5.6 [0, 12.5]

^*Chronic Opioid Therapy is defined as the receipt of 70+ days’ supply of oral opioid medications in the 90 days before the physician took the survey.

^±“Panel” refers to the group of patients who have selected a given physician as their main source of primary healthcare.

^∞Patient characteristics expressed as the median [Interquartile Range] of the panel-level means calculated across the 224 physicians.

^£Physician prescribing characteristics expressed as the median [Interquartile Range] of the panel-level means calculated across the 224 physician panels.

^βMED = Morphine Equivalent Dose.