| Value | Category | Cases | |
|---|---|---|---|
| 1 | Previous birth interval: < 2 years | 12611 |
40.5%
|
| 2 | Previous birth interval: 2 years | 7628 |
24.5%
|
| 3 | Previous birth interval: 3 years | 5391 |
17.3%
|
| 4 | Previous birth interval: 4 + years | 5515 |
17.7%
|