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| Survey
Year |
Index of
Marriage (Cm) |
Index of
Contraception (Cc) |
Index of
postpartum infecundity (Ci) |
Total
Fecundity |
Cm*Cc*Ci | Predicted
Fertility Rate (No Abortion) |
Observed
fertility |
|---|---|---|---|---|---|---|---|
| JPFHS 2012 | 0.479 | 0.482 | 0.926 | 15.3 | 0.214 | 3.3 | 3.5 |
| JPFHS 2017 | 0.472 | 0.550 | 0.926 | 15.3 | 0.241 | 3.7 | 2.7 |
