Table 2

Symptoms reported by 92 cases and 92 controls

Cases n (%)Controls n (%)95% CIp Value
Symptoms reported by student
    Headache47 (51)14 (15)1.67 to 4.60<0.001
    Dizziness20 (22)5 (5)1.13 to 2.080.018
    Tiredness54 (59)22 (24)1.49 to 3.90<0.001
    Concentration43 (47)18 (20)1.33 to 3.700.002
    Sore throat30 (33)9 (10)1.31 to 3.930.003
    Cough38 (41)20 (22)1.03 to 2.690.036
    Stomach ache43 (47)14 (15)1.47 to 3.95<0.001
    Vomiting28 (30)6 (6)1.34 to 3.780.002
    Diarrhoea19 (21)3 (3)1.25 to 4.300.009
    Muscle pains38 (41)19 (21)1.11 to 3.030.016
    Joint pain32 (35)16 (17)1.03 to 2.740.034
    Back pain30 (33)12 (13)1.14 to 3.230.013
    Swollen glands24 (26)5 (5)1.41 to 4.880.002
    Painful menstrual periods26 (48)13 (23)1.03 to 3.550.038
Mean total no of symptoms5.482.02.47 to 4.43<0.001
  • The confidence intervals shown are for odds ratio or difference in means.