Table 2 Probability data for the VTs strategy
Variable | Probability | Distribution for PSA | Source | Comments |
|---|---|---|---|---|
Removal of VTs (1st insertion) | 0.072 | Beta ~ (6, 77) | Phua et al. [14] | Different risk has been predicted for subsequent removal procedures[14] |
Removal of VTs (≥2 insertions) | 0.171 | Beta ~ (7, 34) | Phua et al. [14] | |
Re-insertion of 2nd VTs | 0.25 | Beta ~ (25, 75) | NCCWCH [7] | Indifferent risk has been predicted for subsequent insertion procedures[7], which is in line with the suggestion by Sheahan et al.[49]. Distribution for PSA is based on the report that 25 out of 100 children require 2 or more insertions of VTs |
Re-insertion of 3rd VTs | 0.25 | Beta ~ (25, 75) | NCCWCH [7] |