Table 2.
Baseline characteristics of participants with chronic neck pain (NP) by trial arm.
| Characteristic | Arm 1 (Sequence AB: OMT then waiting period) N=44 Mean (SD) or N (%) |
Arm 2 (Sequence BA: waiting period then OMT) N=43 Mean (SD) or N (%) |
|---|---|---|
| Age (years) | 40.70 (13.12) | 43.40 (13.97) |
| Sex | ||
| Female | 33 (75%) | 33 (77%) |
| Male | 11 (25%) | 10 (23%) |
| Race | ||
| American Indian or Alaska Native | 1 (2.3%) | 1 (2.3%) |
| Asian | 4 (9.1%) | 1 (2.3%) |
| Black or African American | 1 (2.3%) | 3 (7%) |
| More than one race | 2 (4.5%) | 2 (4.7%) |
| White | 36 (81.8%) | 36 (83.7%) |
| Ethnicity | ||
| Hispanic or Latino | 7 (15.9%) | 2 (4.7%) |
| Not Hispanic or Latino | 37 (84.1%) | 39 (90.7%) |
| Unknown | 0 (0%) | 2 (4.7%) |
| Height (m) | 1.69 (0.07) | 1.69 (0.08) |
| Weight (kg) | 77.77 (14.93) | 80.01 (15.51) |
| BMI (kg/m2) | 27.31 (4.71) | 28.17 (5.47) |
| Duration of NP (years) | 8.29 (8.73) | 10.13 (8.92) |
| Average pain | 5.52 (1.36) | 5.28 (1.74) |
| Current pain | 4.86 (2.00) | 5.14 (2.02) |
| NDI (%) | 35.8 (9.9) | 37.4 (8.9) |
| FABQ work | 13.84 (8.32) | 14.67 (8.83) |
| FABQ physical activity | 12.02 (5.80) | 12.44 (4.17) |
| PROMIS Profile pain interference | 58.29 (7.52) | 59.73 (5.60) |
| PROMIS Profile satisfaction with participation in social roles | 45.34 (9.47) | 44.34 (5.93) |
| PROMIS Profile sleep disturbance | 56.46 (6.90) | 57.00 (7.05) |
| PROMIS Profile fatigue | 59.01 (7.31) | 56.48 (7.80) |
| PROMIS Profile depression | 50.13 (9.37) | 51.77 (9.16) |
| PROMIS Profile anxiety | 52.88 (9.54) | 54.46 (8.54) |
| PROMIS Profile physical function | 46.10 (6.61) | 45.01 (6.60) |
OMT=osteopathic manipulative treatment; SD=standard deviation; BMI=Body Mass Index; NDI=Neck Disability Index; FABQ=Fear Avoidance Beliefs Questionnaire; PROMIS= Patient-Reported Outcomes Measurement Information System.