| Average sample (design effect ratio = 1.19) | High psychological distress (design effect ratio = 1.32) | ||
---|---|---|---|---|
 | LA-RDD n = 2,000 | EWP n = 2,380 | LA-RDD n = 1,960 | EWP n = 2,600 |
Number of dialling | 29,800 | 23,562 | 29,204 | 25,740 |
Costed dialling * | 16,600 | 15,708 | 16,268 | 17,160 |
Calling time (in hours) | 1,180 | 1,249.5 | 1,156.4 | 1,365 |
Cost†| $26,920 | $28,132 | $26,382 | $30,732 |