Table 1

Sample Characteristics (N = 1,334)

VariableNo. (Unweighted)% Weighted
Age, y
 18–4424916.8
 45–6479860.6
 ≥6528722.7
Sex, female, %90769.0
Race
 African American1027.7
 White1,12083.6
 Asian241.3
 Other887.4
Marital status
 Married/living as married88665.3
 Never married14411.0
 Widowed917.3
 Separated/divorced21716.5
Education
 Less than high school795.0
 High school graduate/trade school41932.2
 Some college54340.4
 College graduate29322.3
PHQ-8 scorea
 0–434131.2
 5–938831.1
 10–1429919.6
 ≥1530518.1
Average daily morphine-equivalent dose
 <50 mg50971.0
 50–99 mg41416.6
 ≥100 mg41612.4
Health plan site
 GHC77660.2
 KPNC55839.2
Average pain severityb
 0–2363.4
 3–555146.4
 6–746430.8
 ≥828219.4
  • GHC = Group Health Cooperative; KPNC = Kaiser Permanente of Northern California; PHQ-8 = 8-item version of the Patient Health Questionnaire.

  • a Scored on a scale in which 0–4 = no, 5–9 = mild, 10–14 = moderate, and ≥15=severe depression.

  • b Scored on a range from 0–10 in which a higher score indicates worse pain.