| Method | IRR (95% CI) | P-value |
---|---|---|---|
Overall difference between collection methods | Â HLC | 1 | Â |
 Feeding | 0.73 (0.25–2.12) | 0.568 | |
 CDC-LT | 3.13 (1.57–6.26) | 0.001 | |
Within treatment | Â HLC | 1 | Â |
 Feeding | 0.01 (0.01–0.04) |  < 0.0001 | |
 CDC-LT | 1.43 (0.87–2.33) | 0.158 | |
Within control | Â HLC | 1 | Â |
 Feeding | 0.02 (0.01–0.04) |  < 0.0001 | |
 CDC-LT | 0.48 (0.29–0.80) | 0.005 |