Table 1 Definitions, statistical measures of consensus and outcome criteria indicators
| Â | Definition | Statistics | Round 1 | Round 2 | Round 3 |
|---|---|---|---|---|---|
Consensus | The degree (measure) to which a group of experts shares the same opinion (30,p.1525) | Percentage of agreement Interquartile range (IQR) |  ≥ 70% |  ≥ 70% IQR < 1 |  ≥ 70% |
Outcome criteria indicators | If agreement ≥ 70% (proportion of experts responding they agree or strongly agree), item or construct accepted If agreement between 50 and 69%, item or construct reassessed in the next round If agreement ≤ 49%, item or construct rejected | Construct | Items | Items reassessed and reworded items | |