Table 1.
A comparison of the distribution of number of HPV genotypes detected in hybrid capture 2 (hc2)-positive specimens stored frozen at pH 12–13 for 6 months, 4 months, and 2.5 months (n = 143 for each time point). The results were compared to hc2-positives specimens stored at pH 6–7 for one month (n = 142) (“Control”).
| Storage Time at pH 12–13 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 6 Months | 4 Months | 2.5 Months | Control | ||||||
| n | % | n | % | n | % | n | % | ||
| Number of HPV Genotypes Detected | 0 | 8 | 6% | 3 | 2% | 12 | 8% | 11 | 8% |
| 1 | 88 | 62% | 103 | 72% | 94 | 66% | 90 | 63% | |
| 2 | 27 | 19% | 25 | 17% | 26 | 18% | 27 | 19% | |
| 3 | 15 | 10% | 9 | 6% | 6 | 4% | 11 | 8% | |
| 4 | 3 | 2% | 2 | 1% | 4 | 3% | 2 | 1% | |
| 5 | 0 | 0% | 1 | 1% | 0 | 0% | 0 | 0% | |
| 6 | 0 | 0% | 0 | 0% | 1 | 1% | 0 | 0% | |
| 7 | 2 | 1% | 0 | 0% | 0 | 0% | 1 | 1% | |
p = 0.3, Pearson χ2; ptrend = 0.2