Table 5.

Health Status at Waiting Room Screen and 6-Month Follow-up: Unadjusted Descriptive Statistics

Health Status Measure	Average at Waiting Room Screen (SD)	Average at 6-Month Follow-up (SD)	Average Change Score (SD)
Patients with pain
Pain interference†	4.84 (2.97)	2.11*(2.74)	2.73 (3.22)
Pain bothersomeness‡	6.64 (2.75)	2.98*(2.99)	3.67 (3.55)
Restricted activity days due to physical health	5.44 (8.20)	3.60*(7.57)	1.79 (8.11)
Patients with depressive symptoms
SCL Depression Score§	1.71 (.65)	.92*(.74)	.79 (.75)
Restricted activity days due to emotional health	6.04 (8.03)	2.73*(6.22)	3.24 (8.60)

^*Difference between averages is significant (P <.0001).

^†The pain interference scale consists of 3 items: 1) how much has the pain problem interfered with daily activities in past 4 weeks; 2) how much has the pain problem interfered with your ability to take part in recreational, social, and family activities in past 4 weeks; and 3) how much has the pain problem interfered with ability to work (including housework and school) in past 4 weeks. The 0-to 10-point scale for each item ranges from “no interference” (0) to “unable to carry on activities” (10).⁴⁷

^‡Pain bothersomeness is a single-item, 0-to 10-point scale indicating the “bothersomeness” of the pain problem in the past 4 weeks, from “not bothersome” (0) to “extremely bothersome” (10).⁴⁶

^§The 20-item Hopkins Symptom Checklist for Depression (SCL-20), where scores≥1.70 indicate severe depressive symptoms in the past 4 weeks.³⁷,⁴³,⁴⁴

SD, standard deviation.