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Table 6 Subject-reported Impact of Fibromyalgia on Cognitive Function, Overall and by Fibromyalgia Severity Level

From: The comparative burden of mild, moderate and severe Fibromyalgia: results from a cross-sectional survey in the United States

Cognitive Area Overall
(n = 203)
Mild
(n = 21)
Moderate
(n = 49)
Severe
(n = 133)
p-valuea
   Concentrate, n (%)      < 0.001
Not at all 9 (4.4) 4 (19.0) 4 (8.2) 1 (0.8)  
A little 41 (20.2) 11 (52.4) 15 (30.6) 15 (11.3)  
Moderately 49 (24.1) 4 (19.0) 14 (28.6) 31 (23.3)  
Very much 82 (40.4) 2 (9.5) 15 (30.6) 65 (48.9)  
Totally 22 (10.8) 0 (0.0) 1 (2.0) 21 (15.8)  
   Remember, n (%)      < 0.001
Not at all 11 (5.4) 5 (23.8) 4 (8.2) 2 (1.5)  
A little 38 (18.7) 10 (47.6) 14 (28.6) 14 (10.5)  
Moderately 43 (21.2) 4 (19.0) 9 (18.4) 30 (22.6)  
Very much 89 (43.8) 2 (9.5) 21 (42.9) 66 (49.6)  
Totally 22 (10.8) 0 (0.0) 1 (2.0) 21 (15.8)  
   Make Decisions, n (%)      < 0.001
Not at all 24 (11.8) 9 (42.9) 4 (8.2) 11 (8.3)  
A little 56 (27.6) 9 (42.9) 24 (49.0) 23 (17.3)  
Moderately 51 (25.1) 2 (9.5) 13 (26.5) 36 (27.1)  
Very much 63 (31.0) 1 (4.8) 8 (16.3) 54 (40.6)  
Totally 9 (4.4) 0 (0.0) 0 (0.0) 9 (6.8)  
   Think, n (%)      < 0.001
Not at all 19 (9.4) 8 (38.1) 7 (14.3) 4 (3.0)  
A little 54 (26.6) 9 (42.9) 16 (32.7) 29 (21.8)  
Moderately 53 (26.1) 3 (14.3) 14 (28.6) 36 (27.1)  
Very much 64 (31.5) 1 (4.8) 12 (24.5) 51 (38.3)  
Totally 13 (6.4) 0 (0.0) 0 (0.0) 13 (9.8)  
  1. a Chi-square test.
  2. Source: Subject Questionnaire.