|  | Antifilarial Antibody Level* | ||
---|---|---|---|---|
Treatment status | Â | 2000 | 2001 | Â |
Received treatment | Â | Median (interquartile range) | Median (interquartile range) | p-value |
 | IgG1 | 68.5 (22.2–147.5) | 43.0 (20.9–85.6) | 0.001 |
 | IgG4 | 57.5 (29.9–98.3) | 55.9 (21.0–65.9) | 0.067 |
Did not receive treatment | Â | Â | Â | Â |
 | IgG1 | 64.5 (31.9–157.0) | 100.0 (52.3–169.7) | 0.101 |
 | IgG4 | 61.5 (45.6–104.6) | 96.4 (52.40–216.0) | 0.088 |