Table 1 Clinical course details and characteristics of patients presented for the cohort and each of the visual trajectories (n = 888)
Cohort | Single episode | Episodic | Mild Ongoing | Fluctuating | Severe Ongoing | Neither | |
|---|---|---|---|---|---|---|---|
Number, n (%) | 888 (100) | 121 (14) | 331 (37) | 82 (9) | 318 (36) | 14 (2) | 22 (2) |
Weekly SMS-based details | |||||||
Total number of days with pain, median (IQR) | 100 (51–175) | 26 (8–50) | 71 (44–110) | 114 (70–166) | 180 (129–264) | 315 (267–331) | 74 (23–139) |
Proportion (%) of weeks, median (IQR) | |||||||
No or minor pain (< 2) | 33 (4–65) | 83 (67–94) | 49 (26–71) | 26 (3–60) | 4 (0–24) | 0 (0–2) | 31 (4–79) |
Mild pain (≥ 2 < 4) | 24 (12–40) | 10 (2–24) | 25 (16–40) | 38 (20–59) | 26 (12–41) | 7 (0–20) | 19 (2–35) |
Moderate pain (≥ 4 < 6) | 18 (6–32) | 4 (0–8) | 12 (6–25) | 17 (4–28) | 29 (19–44) | 25 (12–35) | 20 (4–37) |
Severe pain intensity (≥ 6) | 4 (0–16) | 0 (0–2) | 4 (0–10) | 2 (0–8) | 17 (4–37) | 62 (27–86) | 6 (0–17) |
Mean pain intensity, median (IQR)a | 4 (2–6) | 0.5 (0.2–1.1) | 1.8 (1.1–2.6) | 2.3 (1.4–3.2) | 3.8 (2.8–4.9) | 6.1 (4.5–7.5) | 2.5 (0.7–3.6) |
Mean duration of pain-free periods (weeks), median (IQR) | 2 (1–8) | 9 (5–23) | 3 (2–4) | 2 (1–3) | 2 (1–3) | 0 (0–0) | 2 (2–11) |
Longest pain-free period (weeks), median (IQR) | 6 (2–13) | 22 (10–38) | 6 (3–11) | 3 (1–7) | 1 (0–1) | 0 (0–0) | 5 (1–15) |
No pain last four weeks, % | 20 | 64 | 23 | 9 | 3 | 0 | 23 |
Number of painful periods, median (IQR) | 4 (1–6) | 3 (1–8) | 7 (5–9) | 5 (4–8) | 1 (1–5) | 1 (1–1) | 4 (1–9) |
Longest painful period (weeks), median (IQR) | 11 (6–22) | 4 (2–9) | 9 (5–15) | 12 (7–21) | 20 (10–52) | 39 (10–52) | 9.5 (4–16) |
Pain intensity variation 1 yearb, median (IQR) | 1.2 (1.1–2.0) | 1.1 (0.7–1.5) | 1.7 (1.3–2.1) | 1.3 (1.0–1.8) | 1.6 (1.2–2.0) | 1.7 (1.0–2.0) | 1.7 (1.1–2.0) |
Pain intensity variation last quarterb, median (IQR) | 1.2 (0.8–1.7) | 0.3 (0.0–1.1) | 1.5 (0.9–2.0) | 0.9 (0.6–1.4) | 1.3 (0.9–1.8) | 1.0 (0.8–1.7) | 1.3 (0.6–1.7) |
Stable SMS-based pattern, yes % | 71 | 38 | 62 | 77 | 91 | 100 | 68 |
1-year questionnaire data | |||||||
Pain intensity, median (IQR) | 2 (0–4) | 0 (0–0) | 1 (0–3) | 2 (1–4) | 4 (3–5) | 6 (5–8) | 0.5 (0–3) |
Duration of episode < 1 month, % | 15 | 46 | 17 | 10 | 3 | 0 | 19 |
Radiating pain to shoulder/elbow, % | 64 | 34 | 50 | 76 | 86 | 92 | 36 |
Recovery expectations, median (IQR) | 6 (3–9) | 0 (0–2) | 5 (2–8) | 6 (4–9) | 9 (7–10) | 10 (8–10) | 4 (1–7) |
Örebro screening questionnaire, median (IQR) | 34 (23–46) | 17 (11–23) | 30 (22–38) | 32 (23–40) | 46 (37–54) | 60 (49–65) | 26 (14–44) |
HSCL-10, median (IQR) | 1.4 (1.2–1.8) | 1.1 (1.0–1.4) | 1.4 (1.2–1.7) | 1.4 (1.2–1.7) | 1.6 (1.3–2.0) | 2.0 (1.5–2.2) | 1.2 (1.0–1.5) |
NDI, median (IQR) | 9 (4–14) | 2 (1–4) | 7 (4–10) | 7 (5–11) | 14 (10–18) | 23 (18–30) | 5 (2–11) |
Number of MSK pain sites, median (IQR) | 4 (2–6) | 2 (0–3) | 3 (2–5) | 4 (2–6) | 5 (4–7) | 7 (4–8) | 3 (2–5) |
Health status, (median IQR) | 80 (63–90) | 90 (80–95) | 80 (70–90) | 80 (75–88) | 70 (50–80) | 50 (30–64) | 82.5 (70–90) |
Baseline patient characteristics | |||||||
Age (y), median (IQR) | 45 (14) | 45 (35–53) | 43 (35–52) | 47 (38–54) | 46 (38–55) | 46 (41–63) | 46 (35–57) |
Female, % | 655 (74) | 60 | 78 | 63 | 79 | 57 | 68 |
First consultation, % | 135 (16) | 21 | 14 | 14 | 14 | 15 | 32 |
Physical activity, yes % | 69 | 69 | 68 | 70 | 70 | 57 | 77 |
Pain intensity, median (IQR) | 4 (2–6) | 3 (0–4) | 4 (2–5) | 3 (2–5) | 5 (4–6) | 5 (5–7) | 4 (2–6) |
No previous episodes, % | 13 | 33 | 13 | 10 | 7 | 14 | 14 |
NP history baseline > 5 years, yes % | 69 | 48 | 71 | 64 | 75 | 92 | 47 |