Table 4.
Demographic, clinical and psychological characteristics based on intermittent versus constant pain among (N = 604*)
| Variables median (IQR) | Constant pain (N = 487) |
Intermittent pain (N = 117) |
P-value† |
|---|---|---|---|
| Demographics and Patient Reported Outcome (PRO) Measures | |||
| Age | 14 (13–16) | 13 (11–15) | < 0.001Ɨ |
| Sex, Female | 89 (18%) | 30 (26%) | 0.07 |
| Duration of pain (months) | 18 (8–36) | 24 (10–48) | 0.04 Ɨ |
| Current pain (0–10) | 6 (4–8) | 0 (0–2) | < 0.0001 Ɨ |
| Most pain (0–10) | 10 (9–10) | 9 (8–10) | < 0.001 Ɨ |
| Least pain (0–10) | 4 (2–6) | 0 (0–0) | < 0.0001 Ɨ |
| Patient FDI (0–60) | 25 (17–32) | 13 (7–21) | < 0.0001 Ɨ |
| SSS | 6 (4–8) | 4 (2–6) | < 0.0001 Ɨ |
| Autonomic changes§, Yes | 69 (14%) | 12 (10%) | 0.26 |
| WPI | 6 (2–11) | 4 (1–9) | 0.03 Ɨ |
| History of trigger event | 145 (30%) | 25 (21%) | 0.07 |
| Attend School | 248 (51%) | 75 (64%) | 0.01 Ɨ |
| Patient Reported Psychological Problems¶ | |||
| Anxiety | 234 (48%) | 40 (34%) | 0.01 Ɨ |
| Depression | 140 (29%) | 26 (22%) | 0.15 |
| Suicidal Ideation | 100 (21%) | 14 (12%) | 0.03 Ɨ |
| Previous outpatient mental health care | 332 (68%) | 69 (59%) | 0.06 |
| Previous psychiatric hospitalization | 30 (6%) | 2 (2%) | 0.06 |
| Pain Diagnosis | |||
| Diffuse AMPS | 301 (62%) | 68 (58%) | 0.46 |
| Limited AMPS | 186 (38%) | 49 (42%) | |
Abbreviations: N number of subjects, IQR Interquartile Range, FDI Functional Disability Index, WPI Widespread Pain Index, SSS Symptom Severity Score
Missing data: current pain (1), most pain (3), least pain (1), FDI patient (8), FDI parent (10), WPI (53), SSS (53)
*We eliminated the 26 subjects who reported both constant and intermittent pain and 6 subjects with no pain
†P-value statistically significant if < 0.05
¶Subjects could report more than one
§Autonomic changes categories: subjects could report or demonstrate an autonomic change (including temperature change, cyanosis, edema) in > 1 category