Table 2

Comparison between respondents with and without FM

FM
(n=189)
No FM
(n=427)
P valueWeighted
P value
Age (years)46±1144±120.3120.04
Female gender, n (%)107 (56.6)370 (86.7)<0.0001
Marital status
 Single, n (%)37 (19.6)79 (18.5)0.7391.000
 Married, n (%)137 (72.5)300 (70.3)0.6310.519
 Separated, n (%)12 (6.3)39 (9.1)0.2710.848
 Widowed, n (%)3 (1.6)9 (2.1)1.0001.000
Employment status
 Student, n (%)4 (2.1)25 (5.9)0.0610.019
 Employed, n (%)158 (83.6)336 (78.7)0.1880.047
 Unemployed, n (%)17 (9.0)49 (11.5)0.3990.059
 Retired, n (%)10 (5.3)17 (4.0)0.5230.187
COVID-19 symptoms
 Fever, n (%)128 (67.7)301 (70.5)0.4910.746
 Cough, n (%)100 (52.9)192 (45.0)0.0690.046
 Dyspnoea, n (%)86 (45.5)151 (35.4)0.0170.001
 Headache, n (%)112 (59.3)278 (65.1)0.1650.108
 Myalgia, n (%)133 (70.4)303 (71.0)0.8820.749
 Arthralgia, n (%)122 (64.6)282 (66.0)0.7190.246
 Anosmia or ageusia, n (%)134 (70.9)303 (71.0)0.9880.352
 Abdominal pain, n (%)71 (37.6)158 (37.1)0.9100.696
Treatment setting
 No treatment, n (%)45 (23.8)120 (28.1)0.2790.019
 Home treatment, n (%)103 (54.5)272 (63.7)0.0320.233
 Hospital admission, n (%)36 (19.0)30 (7.0)<0.0001<0.0001
 ICU admission, n (%)5 (2.6)5 (1.2)0.1850.234
COVID-19 duration (days)14 (7–21)12 (7–20)0.4240.820
COVID-19 treatment
 Analgesics/NSAIDs, n (%)131 (69.3)291 (68.1)0.7550.364
 LMWH, n (%)58 (30.7)73 (17.1)<0.0001<0.0001
 Hydroxychloroquine, n (%)22 (11.6)31 (7.3)0.0740.029
 Supplemental oxygen, n (%)34 (18)32 (7.5)<0.0001<0.0001
Pre-existent comorbid diseases
 Rheumatoid arthritis or other inflammatory arthritides, n (%)7 (3.7)23 (5.4)0.3710.294
 Connective tissue diseases, n (%)0 (0)3 (0.7)0.2480.251
 Anxiety, n (%)37 (19.6)71 (16.6)0.3750.198
 Depression, n (%)11 (5.8)25 (5.9)0.9860.414
 Diabetes, n (%)3 (1.6)7 (1.6)0.9620.706
 High blood pressure, n (%)51 (27)46 (10.8)<0.0001<0.0001
 Chronic pulmonary diseases, n (%)16 (8.5)36 (8.4)0.9890.575
 History of myocardial infarction, n (%)1 (0.5)2 (0.5)0.9200.983
 History of stroke, n (%)0 (0)2 (0.5)0.3460.418
 Other neurological diseases, n (%)1 (0.5)2 (0.5)0.9200.763
 Malignancy, n (%)2 (1.1)3 (0.7)0.6500.349
BMI (kg/m2)30.4±4.423±2.9<0.0001<0.0001
BMI category
 Underweight, n (%)0 (0)19 (4.4)0.0010.001
 Normal weight, n (%)19 (10.1)316 (74)<0.0001<0.0001
 Overweight, n (%)77 (40.7)83 (19.4)<0.0001<0.0001
 Obese, n (%)93 (49.2)9 (2.1)<0.0001<0.0001
  • P values <0.05 are highlighted in bold.

  • BMI, body mass index; FM, fibromyalgia; ICU, intensive care unit; LMWH, low-molecular-weight heparin; NSAID, non-steroidal anti-inflammatory drug.