Table 1 Summary statistics for the AFR analysis
Income Group | Sample Size (N) | Mean AFR (years) | SE (years) | Modal AFR (years) |
|---|---|---|---|---|
High-income | 2,726,845 | 29.4 | 5.6 | 30 |
Middle-income | 946,557 | 24.8 | 5.5 | 20 |
Low-income | 147,700 | 19.3 | 3.5 | 19 |
Natural fertility | 183 | 20.4 | 5.0 | 18 |
US WIC nonparticipant | 802,084 | 28.5 | 5.4 | 29 |
US WIC participant | 348,341 | 23.3 | 5.0 | 20 |