Analysis
Univariate
Multivariate
Signs and Symptoms
RT-PCR Result
Crude O.R.* (95% C.I.)
Adjusted O.R.*
95% C.I. for O.R.*
P-value
Positive (N=157)
Negative (N=133)
Lower
Upper
Fever
116
61
5.6 (2.9-10.8)
8.1
3.4
19
<0.001
History of fever
111
71
3.3 (1.5-7.1)
2.7
1
7.5
0.05
Sore throat
118
96
1.3 (0.6-2.5)
1
0.4
2.8
0.94
Rhinorrhoea
107
92
0.9 (0.5-1.7)
0.5
0.2
1.1
0.1
Dry cough
96
70
1.5 (0.9-2.6)
2.1
0.8
5.2
0.13
Productive cough
41
29
1.3 (0.7-2.4)
1.5
0.5
4.7
0.52
Nausea
26
18
1.2 (0.6-2.4)
0.9
0.3
2.8
0.83
Vomiting
19
12
1.2 (0.6-2.8)
0.9
0.2
3.9
0.89
Headache
81
52
1.8 (1.1-5.8)
1.5
0.6
3.7
0.38
Myalgia
71
51
1.2 (0.7-2.0)
0.5
0.2
1.5
0.2
Joint pain
40
24
1.6 (0.9-2.8)
1.9
0.6
6.5
0.3
* Odds Ratio
Table 2:
Analysis of symptoms and signs, pH1N1 lab-confirmed cases, June-December 2009, Oman.
