Statements (17)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
statistical analysis
|
| gptkbp:alternativeTo |
life-table analysis
|
| gptkbp:appliesTo |
contraceptive efficacy
|
| gptkbp:category |
public health
demography |
| gptkbp:form |
(number of pregnancies x 1200) / (number of women x months of exposure)
|
| gptkbp:hasUnit |
pregnancies per 100 woman-years
|
| https://www.w3.org/2000/01/rdf-schema#label |
Pearl Index
|
| gptkbp:introduced |
1933
|
| gptkbp:limitation |
assumes constant failure rate
less accurate for methods with variable risk over time |
| gptkbp:namedAfter |
gptkb:Raymond_Pearl
|
| gptkbp:reported_as |
a single number
|
| gptkbp:used_in |
clinical trials of contraceptives
|
| gptkbp:usedFor |
measuring effectiveness of contraceptive methods
|
| gptkbp:bfsParent |
gptkb:Ray_Pearl
|
| gptkbp:bfsLayer |
6
|