Table 2.
Descriptive statistics of model variables by cohort.
| Cohort 0 | Cohort 1 | Cohort 2 | Cohort 3 | |
|---|---|---|---|---|
| Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | |
| Demographic variables | ||||
| Age at first birth | 21.2 (3.7) | 20.8 (4.9) | 23.8 (6.4) | 20.8 (3.2) |
| Age at last birth | 37.3 (5.9) | 35 (4.9) | 32.1 (5.9) | 25.5 (3.6) |
| Total fertility | 6.8 (2.5) | 5.9 (3.5) | 3.0 (2.5) | 1.7 (1.5) |
| Total fertility-coefficient of variation | 0.36 | 0.59 | 0.84 | 0.87 |
| Family planning variables | ||||
| Tubal ligations N (%) | 0 (0%) | 17 (53%) | 16 (73%) | 12 (16%) |
| Age at TL | NA | 36.4 (5.6) | 32.1 (5.2) | 24.7 (2.2) |
| Traditional determinants | ||||
| Hectares under cultivation | 2.9 (1) | 5.8 (3) | 7.1 (3.3) | 9.1 (8.8) |
| Hectares Gini | 0.20 | 0.27 | 0.26 | 0.46 |
| Sharing group size | 4.3 (1.6) | 5.5 (2.7) | 4.6 (2) | 4.9 (2.6) |
| Sharing group Gini | 0.21 | 0.27 | 0.24 | 0.29 |
| Novel determinants | ||||
| Years of education | 1.3 (1.3) | 3.0 (2.1) | 3.9 (2) | 9.4 (2.6) |
| Proportion of Wage-laborers | 0.2 (0.2) | 0.1 (0.2) | 0.2 (0.2) | 0.3 (0.2) |
Total fertility is defined as the total number of live births by a woman in the year 2017. For Cohort 0, 1, and 2, total fertility is equivalent to Completed Fertility. Descriptive accounts of variable creation are presented in Supplementary Methods.