Cases n (%) | Controls n (%) | 95% CI | p Value | |
Symptoms reported by student | ||||
Headache | 47 (51) | 14 (15) | 1.67 to 4.60 | <0.001 |
Dizziness | 20 (22) | 5 (5) | 1.13 to 2.08 | 0.018 |
Tiredness | 54 (59) | 22 (24) | 1.49 to 3.90 | <0.001 |
Concentration | 43 (47) | 18 (20) | 1.33 to 3.70 | 0.002 |
Sore throat | 30 (33) | 9 (10) | 1.31 to 3.93 | 0.003 |
Cough | 38 (41) | 20 (22) | 1.03 to 2.69 | 0.036 |
Stomach ache | 43 (47) | 14 (15) | 1.47 to 3.95 | <0.001 |
Vomiting | 28 (30) | 6 (6) | 1.34 to 3.78 | 0.002 |
Diarrhoea | 19 (21) | 3 (3) | 1.25 to 4.30 | 0.009 |
Muscle pains | 38 (41) | 19 (21) | 1.11 to 3.03 | 0.016 |
Joint pain | 32 (35) | 16 (17) | 1.03 to 2.74 | 0.034 |
Back pain | 30 (33) | 12 (13) | 1.14 to 3.23 | 0.013 |
Swollen glands | 24 (26) | 5 (5) | 1.41 to 4.88 | 0.002 |
Painful menstrual periods | 26 (48) | 13 (23) | 1.03 to 3.55 | 0.038 |
Mean total no of symptoms | 5.48 | 2.0 | 2.47 to 4.43 | <0.001 |
The confidence intervals shown are for odds ratio or difference in means.