. 2010 Mar 29;15(3):536–542. doi: 10.1111/j.1440-1843.2010.01722.x

Table 4.

Geographical variation in overall viral prevalence

Group	WMP ^† (overall)	95% CI for WMP		WMP (Picorna)	95% CI for WMP		WMP (influenza)	95% CI for WMP		WMP (RSV)	95% CI for WMP
Group	WMP ^† (overall)	Lower bound	Upper bound	WMP (Picorna)	Lower bound	Upper bound	WMP (influenza)	Lower bound	Upper bound	WMP (RSV)	Lower bound	Upper bound
USA	0.370	−0.491	1.231	0.159	−0.603	0.922	0.070	−0.151	0.291	0.048	−0.172	0.268
Europe	0.432	0.304	0.560	0.240	0.220	0.260	0.070	−0.069	0.210	0.081	−0.005	0.168
Asia ^‡	0.221			0.031			0.099			0.023
Australia ^‡	0.359			0.283			0.033			0.011
Overall	0.359	0.257	0.461	0.173	0.072	0.273	0.074	0.029	0.120	0.053	0.016	0.090

^{^†}

The confidence intervals are constructed by assuming a Normal distribution for the ratios.

^{^‡}

The confidence interval was not calculated for Asia and Australia as there was only one study for each of these two continents.

WMP, weighted mean prevalence.