Characteristics of Two Types of Delays across the 4 Waves with a 12-Month Period
| Wave 1 | Wave 2 | Wave 3 | Wave 4 | Total | |
|---|---|---|---|---|---|
| Total number of Delay I* | 84 | 44 | 142 | 131 | 401 |
| Total number of Delay II† | 45 | 25 | 84 | 63 | 217 |
| Median No. of Delay I per practice (IQR) | 2 (1 to 3) | 1 (0 to 2) | 2 (1 to 3) | 2 (1 to 2) | 2 (1 to 3) |
| Median No. of Delay II per practice (IQR) | 1 (0 to 2) | 0 (0 to 1) | 1 (0 to 2) | 1 (0 to 1) | 1(0 to 1) |
IQR, interquartile range.
The 4 waves were reported separately because the starting and end dates were different.
↵* Delay I was calculated based on Z score > 1.282, which corresponds to a one-tailed 90% confidence interval. Delay I is identified if the interval between activities (IBA) deviates from the practice's normal pattern of facilitation activities.
↵† Delay II was calculated based on Z-score > 1.645, which corresponds to a one-tailed 95% confidence interval. Delay II captures a larger deviation from the normal pattern compared to Delay I. Delay I is more sensitive to detecting delays than Delay II and could capture more instances of infrequent facilitation activities.