Skip to main content

Table 4 Demographic, clinical and psychological characteristics based on intermittent versus constant pain among (N = 604*)

From: The spectrum of pediatric amplified musculoskeletal pain syndrome

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%)
  1. Abbreviations: N number of subjects, IQR Interquartile Range, FDI Functional Disability Index, WPI Widespread Pain Index, SSS Symptom Severity Score
  2. Missing data: current pain (1), most pain (3), least pain (1), FDI patient (8), FDI parent (10), WPI (53), SSS (53)
  3. *We eliminated the 26 subjects who reported both constant and intermittent pain and 6 subjects with no pain
  4. P-value statistically significant if < 0.05
  5. Subjects could report more than one
  6. §Autonomic changes categories: subjects could report or demonstrate an autonomic change (including temperature change, cyanosis, edema) in > 1 category