| Survey Sample Sizes | ||||
---|---|---|---|---|---|
Experiment Condition | Baseline | 4-Week Follow-Up | 6-Month Follow-Up | 12-Month Follow-Up | 18-Month Follow-Up |
Mothers | Â | Â | Â | Â | Â |
   Control | 349 | 326 | 270 | 233 | 184 |
   Normal Treatment | 776 | 663 | 266 | 219 | 175 |
   Booster Treatment | -- | -- | 275 | 220 | 189 |
Fathers | Â | Â | Â | Â | Â |
   Control | 340 | 321 | 280 | 230 | 197 |
   Normal Treatment | 504 | 444 | 365 | 297 | 240 |
Total | 1,969 | 1,754 | 1,456 | 1,199 | 985 |