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Table 2 Clinical characteristics of overall sample

From: Societal and individual burden of illness among fibromyalgia patients in France: Association between disease severity and OMERACT core domains

   FM Severitya
Characteristic Total
(n = 88)
Mild
(n = 17)
Moderate
(n = 33)
Severe
(n = 38)
P -value b
Duration of FM symptomsc, n (%)      0.517
3-6 months 10 (11.4) 3 (17.6) 2 (6.1) 5 (13.2)  
7-11 months 4 (4.5) 0 (0.0) 2 (6.1) 2 (5.3)  
1-5 years 46 (52.3) 8 (47.1) 22 (66.7) 16 (42.1)  
6-10 years 20 (22.7) 5 (29.4) 4 (12.1) 11 (28.9)  
> 10 years 7 (8.0) 1 (5.9) 3 (9.1) 3 (7.9)  
Time since diagnosis, years      0.983
Mean (SD) 3.2 (2.9) 3.2 (2.5) 3.1 (2.6) 3.4 (3.3)  
Median 2 3 2 2  
Number of positive MTPS points      0.165
Mean (SD) 13.0 (3.4) 14.4 (2.9) 12.6 (3.1) 12.7 (3.9)  
Median 13 15 12 12  
Comorbid conditionsd      
Anxiety, n (%) 67 (76.1) 12 (70.6) 26 (78.8) 29 (76.3) 0.808
Sleep Disturbance/Insomnia, n (%) 52 (59.1) 10 (58.8) 22 (66.7) 20 (52.6) 0.477
Chronic Fatigue Syndrome, n (%) 46 (52.3) 13 (76.5) 17 (51.5) 16 (42.1) 0.055
Depression, n (%) 40 (45.5) 6 (35.3) 15 (45.5) 19 (50.0) 0.618
Headache/Migraine, n (%) 30 (34.1) 6 (35.3) 7 (21.2) 17 (44.7) 0.113
Restless Leg Syndrome, n (%) 22 (25.0) 8 (47.1) 8 (24.2) 6 (15.8) 0.043
Irritable Bowel Syndrome, n (%) 16 (18.2) 3 (17.6) 4 (12.1) 9 (23.7) 0.450
Raynaud's Syndrome, n (%) 4 (4.5) 1 (5.9) 1 (3.0) 2 (5.3) 1.00
Other, n (%) 6 (6.8) 1 (5.9) 1 (3.0) 4 (10.5) 0.562
Number of comorbid conditions, n (%)      0.934
0 5 (5.7) 1 (5.9) 1 (3.0) 3 (7.9)  
1 15 (17.0) 2 (11.8) 5 (15.2) 8 (21.1)  
2 16 (18.2) 4 (23.5) 6 (18.2) 6 (15.8)  
≥3 52 (59.1) 10 (58.8) 21 (63.6) 21 (55.3)  
Number of comorbid conditionse      0.637
Mean (SD) 3.4 (1.8) 3.8 (2.0) 3.2 (1.5) 3.5 (2.1)  
Median (range) 3 (1-8) 4 (1-7) 3 (1-6) 3 (1-8)  
  1. Clinical case report form.
  2. a Some data were not available, and therefore N-numbers for each group represents the maximum number of patients.
  3. b Fisher's exact test or Kruskal-Wallis test, as appropriate.
  4. c Percentages for each column might not add up to 100% due to missing data.
  5. d Categories are not mutually exclusive.
  6. e Among patients reporting at least 1 comorbid condition