Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The minimum acceptable content validity ratio (CVR) based on the number of participating experts to determine validity
| Number of experts | Acceptable CVR | Number of experts | Acceptable CVR |
|---|---|---|---|
| 5 | 0·99 | 13 | 0·54 |
| 6 | 0·99 | 14 | 0·51 |
| 7 | 0·99 | 15 | 0·49 |
| 8 | 0·75 | 20 | 0·42 |
| 9 | 0·78 | 25 | 0·37 |
| 10 | 0·62 | 30 | 0·33 |
| 11 | 0·59 | 35 | 0·31 |
| 12 | 0·56 | 40 | 0·29 |
