Table 1.
Background variables and means, standard deviation, median and interquartile range for subjective measurements
| Background variables | Treatment group | Healthy controls (HC) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Gender, female, n (%) | 23 (76.7%) | 23 (76.7%) | |||||||||
| Educational level, n (%) | |||||||||||
| Elementary school | 0 (0) | NA | |||||||||
| High school | 10 (33.3) | NA | |||||||||
| University | 19 (63.3) | NA | |||||||||
| Other | 1 (3.3) | NA | |||||||||
| Marrital status | |||||||||||
| Living alone | 6 (20) | NA | |||||||||
| Married or cohabitian | 20 (66.7) | NA | |||||||||
| Other | 4 (13.3) | NA | |||||||||
| Use of analgesic drugs for neck pain, yes (%) | 23 (76.7) | NA | |||||||||
| Smokes, yes (%) | 2 (6.7) | NA | |||||||||
| Outcome measures |
Baseline (BL) Mean (SD)/median (IQR) |
Follow-up (FU) Mean (SD)/median (IQR) |
Healthy Controls (HC) Mean (SD)/median (IQR) |
p value | |||||||
| BL vs. HC | FU vs. HC | ||||||||||
| NDI | 19.6 (7)/18.5 (13-24.8) | 15.1 (7.9)/16 (9–21) | 0.6 (0.8)/0 (0–1) | < 0.01 | < 0.01 | ||||||
| Pre-VAS | 43.4 (22)/42.5 (25-58.8) | 26.5 (23.7)/19 (4.5–46) | 0.1 (0.5)/0 (0–0) | < 0.01 | < 0.01 | ||||||
| Post-VAS | 52.6 (21.6)/54 (39.3–68) | 34 (26)/40 (9–53) | 1 (2.7)/0 (0–0) | < 0.01 | < 0.01 | ||||||
| DHI | 33.2 (20.3)/30 (18–46) | 25.9 (22.2)/19 (10.5–41.5) | NA | ||||||||
* SD: standard deviation; IQR: interquartile range; BL: baseline; FU: follow-up; HC: healthy controls; NDI: Neck Disability Index; Pre-VAS: Visual Analog Scale (VAS) pre butterfly measurement; Post-VAS: VAS post butterfly measurement; DHI: Dizziness Handicap Inventory