Table 2.
Site-specific year-on-year distribution of treponemal infection among blood donors.
| Parameter | Total | 2013 | 2014 | 2015 | 2016 | 2017 | p for trends |
|---|---|---|---|---|---|---|---|
| Ho | 85/4212 (2.02) | 32/1126 (2.84) | 10/630 (1.59) | 17/646 (2.63) | 22/892 (2.47) | 4/918 (0.44) | 0.0031 |
| Tongu | 25/2127 (1.18) | 2/225 (0.89) | 1/300 (0.33) | 2/464 (0.43) | 11/529 (2.08) | 9/609 (1.48) | 0.0610 |
| Hohoe | 226/4908 (4.60) | 18/273 (6.59) | 48/1121 (4.28) | 64/1122 (5.70) | 87/1449 (6.00) | 9/943 (0.95) | 0.0013 |
| Krachi West | 87/6497 (1.34) | 26/1129 (2.30) | 16/1144 (1.40) | 10/1104 (0.91) | 24/1551 (1.55) | 11/1569 (0.70) | 0.0030 |
| p value | <0.0001 | 0.0004 | <0.0001 | <0.0001 | <0.0001 | 0.1442 |
Data are presented as frequency (positive/total) with the corresponding percentage in parenthesis. p is significant at 0.05. p for trends: evaluating significant yearly linear trends; p: an intersite comparison.