TABLE 1.
Demographic and Clinical Characteristics of the Overall Patient Population
| Patients (N = 489) | ||
|---|---|---|
| Male, % (n) | 37.8 | (185) |
| Age, years, mean [SD] | 52.6 | [11.6] |
| Race, % (n) | ||
| White | 84.9 | (415) |
| Black | 4.9 | (24) |
| Asian | 4.5 | (22) |
| Hispanic/Latino/Latin American | 1.8 | (9) |
| Other | 2.9 | (14) |
| Prefer not to state | 0.8 | (4) |
| Missing | 0.2 | (1) |
| Marital status, % (n) | ||
| Single, never married | 14.7 | (72) |
| Married | 52.4 | (256) |
| Living together, not married | 5.3 | (26) |
| Common-law partnership | 2.2 | (11) |
| Divorced | 12.9 | (63) |
| Separated | 1.4 | (7) |
| Widowed | 4.5 | (22) |
| Prefer not to answer | 5.3 | (26) |
| Missing | 1.2 | (6) |
| Type of chronic pain, % (n)a | ||
| Back pain | 76.7 | (375) |
| Joint pain | 51.5 | (252) |
| Fibromyalgia | 14.5 | (71) |
| Headache or migraine | 16.0 | (78) |
| Osteoarthritis | 19.4 | (95) |
| Rheumatoid arthritis | 8.4 | (41) |
| Neuralgia | 23.5 | (115) |
| Pain syndrome | 33.1 | (162) |
| Other | 15.5 | (76) |
| Employment status, % (n) | ||
| Employed, full-time | 19.0 | (93) |
| Employed, part-time | 8.0 | (39) |
| Studying full- or part-time | 1.2 | (6) |
| Both employed and studying | 0.6 | (3) |
| Unable to work because of disability or handicap | 34.2 | (167) |
| Unemployed | 4.5 | (22) |
| Not currently working (e.g., full-time homemaker) | 3.7 | (18) |
| Retired | 21.1 | (103) |
| Other | 1.4 | (7) |
| Prefer not to answer | 6.1 | (30) |
| Missing | 0.2 | (1) |
| Body mass index, kg/m2, mean [SD] | 29.7 | [7.3] |
| Health rating, % (n) | ||
| Excellent | 1.4 | (7) |
| Very good | 6.7 | (33) |
| Good | 29.7 | (145) |
| Fair | 42.3 | (207) |
| Poor | 19.2 | (94) |
| Missing | 0.6 | (3) |
| Duration of chronic pain, years, mean [SD] | 9.8 | [8.9] |
| < 2 years, % (n) | 13.3 | (65) |
| ≥ 2 years, % (n) | 86.7 | (424) |
| Duration of opioid medication, years, mean [SD] | 6.4 | [6.3] |
| < 2 years, % (n) | 23.9 | (117) |
| ≥ 2 years, % (n) | 65.4 | (320) |
| Unknown, % (n)b | 10.6 | (52) |
| Pain severity rating | ||
| Average pain in last 24 hours, mean [SD] | 6.3 | [1.8] |
| Average pain in last 7 days, mean [SD] | 6.3 | [1.7] |
aPatients could report more than 1 type of chronic pain.
bIncludes participants who reported “I don’t know” for duration of opioid medication; patients reported duration of pain of ≥ 2 years (n = 49) and < 2 years (n = 3). The mean (SD) number of years of chronic pain duration for this group was 12.6 (10.1).
SD = standard deviation.