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 |