Table 2.

Univariate Analysis of Individual and Pooled Datasets

Senn, 200514Stein, 20055Combined Datasets
Total patients (n)201258459
Male0.77 (0.44–1.34)0.74 (0.39–1.4)0.9 (0.61–1.33)
Fever4.24 (2.33–7.71)3.84 (1.98–7.45)5.55 (3.65–8.45)
Myalgia2.76 (1.01–7.49)4.22 (1.96–9.1)5.35 (2.99–9.56)
Chills/sweating2.05 (0.97–4.35)3.37 (1.6–7.06)3.43 (2.08–5.66)
Cough3.2 (0.98–10.41)1.8 (0.51–6.31)2.45 (1.05–5.7)
Fatigue0.95 (0.35–2.57)2.35 (1.00–5.52)2.28 (1.26–4.10)
Rhinitis0.96 (0.47–1.94)2.22 (1.02–4.82)1.65 (1.02–2.65)
Headache1.09 (0.51–2.31)1.7 (0.8–3.6)1.64 (1.00–2.68)
Sore throat0.99 (0.52–1.87)0.98 (0.51–1.89)1.07 (0.7–1.65)
Onset <48 hours3.20 (1.79–5.69)1.76 (0.85–3.65)3.69 (2.44–5.58)
  • Values provided as odds ratio (95% CI) unless otherwise indicated.

  • Bold values are significant at P ≤.05.