From: Diagnosing norovirus-associated infectious intestinal disease using viral load
Method of norovirus detection | IID Cases | Controls | Rank-sum test p-value comparing cases to controls | ||||
---|---|---|---|---|---|---|---|
 | Median Ct value | Ct value IQR | Sample size | Median Ct value | Ct value IQR | Sample size |  |
All ages | Â | Â | Â | Â | Â | Â | Â |
   All | 34 | 25–37 | 589 | 38 | 35–39 | 159 | <0.0001 |
   Electron microscopy | 24 | 21–27.5 | 92 |  |  |  | <0.0001 |
RT-PCR (Electron microscopy negative) | 35 | 29–38 | 497 |  |  |  | <0.0001 |
< 5 years | Â | Â | Â | Â | Â | Â | Â |
   All | 34 | 26–37 | 253 | 37 | 34–38 | 92 | <0.0001 |
   Electron microscopy | 23 | 21–25 | 48 |  |  |  | <0.0001 |
RT-PCR (Electron microscopy negative) | 35 | 32–37 | 205 |  |  |  | 0.0001 |
5 years + | Â | Â | Â | Â | Â | Â | Â |
   All | 34 | 25–38 | 334 | 38 | 36–39 | 67 | <0.0001 |
   Electron microscopy | 25 | 22–28.5 | 44 |  |  |  | <0.0001 |
RT-PCR (Electron microscopy negative) | 35 | 27–38 | 290 |  |  |  | <0.0001 |