Table 1.
Concordance between rectal swab and bulk stool specimens for detection of rotavirus, Santa Rosa, Guatemala, 2009.
| Concordant Specimens |
Discordant Specimens |
P-valuea | |||||
|---|---|---|---|---|---|---|---|
| Swab+/bulk+ | Swab−/bulk− | Total concordance (95% CI) |
Swab+/bulk− | Swab−/Bulk+ | Total discordance (95% CI) |
||
| Characteristic | |||||||
| Overall (n = 100) | 47 | 44 | 91% (85–97%) | 4 | 5 | 9% (3–15%) | 0.8 |
| Age group | |||||||
| <1 year (n = 40) | 19 | 18 | 93% (84–100%) | 0 | 3 | 8% (0–16%) | 0.1 |
| 1 to <2 years (n = 39) | 19 | 14 | 85% (73–96%) | 4 | 2 | 15% (4–27%) | 0.5 |
| 2 to <5 years (n = 21) | 9 | 12 | 100% (NA) | 0 | 0 | 0% | 1.0 |
| Healthcare setting | |||||||
| Ambulatory (n = 38) | 16 | 18 | 89% (80–99%) | 1 | 3 | 11% (1–20%) | 0.4 |
| Hospital (n = 62) | 31 | 26 | 92% (85–99%) | 3 | 2 | 8% (1–15%) | 0.7 |
| Clinical characteristic | |||||||
| Onset <1.5 days (n = 50) | 24 | 22 | 92% (84–100%) | 2 | 2 | 8% (0–16%) | 1.0 |
| Current diarrhea (n = 89) | 42 | 39 | 91% (85–97%) | 4 | 4 | 9% (3–15%) | 1.0 |
| Vomiting (n = 75) | 38 | 30 | 91% (84–97%) | 3 | 4 | 9% (3–16%) | 0.7 |
| <1 year old + vomiting (n = 30) | 14 | 13 | 90% (79–100%) | 0 | 3 | 10% (0–21%) | 0.1 |
CI = confidence interval; NA = not applicable.
a
Based on McNemar test for difference between paired proportions (specimen type).