Precision level DCF
Where reference is made to precision/confidence level the following distinction shall apply:
| Level 0: | Precision of parameter is less than for 'level 1' ie parameter cannot be estimated within precision of plus or minus 40 % for a 95 % confidence interval and the coefficient of variation (CV) is higher than 20 % | |
| Level 1: | Level making it possible to estimate a parameter either with a precision of plus or minus 40 % for a 95 % confidence level or a coefficient of variation (CV) of 20 % used as an approximation; | |
| Level 2: | Level making it possible to estimate a parameter either with a precision of plus or minus 25 % for a 95 % confidence level or a coefficient of variation (CV) of 12,5 % used as an approximation; | |
| Level 3: | Level making it possible to estimate a parameter either with a precision of plus or minus 5 % for a 95 % confidence level or a coefficient of variation (CV) of 2,5 % used as an approximation. | |
| Level 4: | Level making: exhaustive data collection. | |
| NR | Not Relevant. It is not possible to provide a meaningful calculation of the precision - eg. because the variance is too large. | |
| NA | Not Applicable. There is no obligation to estimate precision for this parameter. |
Coefficient of variation (CV) is preferred when applicable (Accuracy indicator).
Precision level DCR
PRECISION | Description | |
0 | = | precision of parameter is less than for level 1. ie parameter cannot be estimated within precision of plus or minus 25% with a 95% confidence interval |
1 | = | level 1: level making it possible to estimate a parameter with precision of plus or minus 25 % for a 95 % confidence level; |
2 | = | level 2: level making it possible to estimate a parameter with precision of plus or minus 10 % for a 95 % confidence level |
3 | = | level 3: level making it possible to estimate a parameter with precision of plus or minus 5 % for a 95 % confidence level. |
4 | = | exhaustive data collection |
NR | = | (NOT RELEVANT) it is not possible to provide a meaningful calculation of the precision - eg. because the variance is too large |
NA | = | (NOT APPLICABLE) there is no obligation to estimate precision for this parameter |