Table 3.
Association of B19 IgM and PCR positivity among cases (having severe anaemia Hb ≤ 50 g/l) as compared to controls.
| IgM | IgM > 5 × COV | PCR | IgM+PCR* | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Controls | Controls | Controls | Controls | ||||||
| + | - | + | - | + | - | + | - | ||
|
Cases (Hb ≤ 50 g/l) |
+ | 0 | 10 | 0 | 7 | 0 | 6 | 0 | 3 |
| - | 5 | 249 | 0 | 257 | 5 | 187 | 1 | 194 | |
| Exact Odds Ratio | 2.00 CI95 [0.62, 6.06] |
+ Inf CI95 [1.65, +Inf] |
1.2 CI95 [0.33, 4.01] |
3.00 CI95 [0.33, 77.48] |
|||||
| Exact McNemar test 2-sided p | p = 0.3018 | p = 0.01563 | p = 1 | p = 0.625 | |||||
Numbers refer to matched case-control control pairs.
* only double positive sample scored as positive.