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Table 1 Symptoms at the time of referral (n = 58)

From: Chronic fatigue syndrome after Giardia enteritis: clinical characteristics, disability and long-term sickness absence

  Total
n (%)
Females
n (%)
Males
n (%)
P*
Headache 41 (71) 32 (73) 9 (64) .74
Myalgia 40 (69) 33 (75) 7 (50) .10
Arthralgia 30 (52) 25 (57) 5 (36) .22
Flu-like symptoms 37 (64) 32 (73) 5 (36) .023
Frequent sore throat 27 (47) 23 (52) 4 (29) .14
Tender lymph nodes 11 (19) 9 (21) 2 (14) 1.00
Visual disturbances 22 (38) 18 (41) 4 (29) .53
Dizziness 42 (72) 33 (75) 9 (64) .50
Paresthesia 24 (41) 21 (48) 3 (21) .12
Muscle weakness 47 (81) 37 (84) 10 (71) .43
Photo/phonophobia 35 (60) 32 (73) 3 (21) .001
Reduced stress tolerance 52 (91) 42 (96) 10 (77) .072
Reduced sleep quality 37 (64) 29 (66) 8 (57) .75
Increased need of sleep 51 (89) 39 (89) 12 (86) 1.000
Depression 23 (40) 17 (39) 6 (43) 1.000
Anxiety 21 (37) 17 (40) 4 (29) .54
Concentration problems 56 (97) 43 (98) 13 (93) .43
Memory problems 45 (78) 37 (84) 8 (57) .06
Confusion 18 (32) 13 (30) 5 (39) .74
Word finding problems 36 (63) 28 (64) 8 (62) 1.00
Palpitations 24 (41) 20 (46) 4 (29) .36
Fainting 14 (25) 11 (25) 3 (23) 1.000
Respiratory problems 14 (25) 12 (27) 2 (15) .48
Frequent micturition during night 25 (44) 21 (48) 4 (31) .35
Changed temperature regulation 28 (49) 26 (59) 2 (15) .010
Night sweating 24 (42) 18 (41) 6 (46) .76
  1. * Fisher's exact test comparing females and males