DID Analysis of Mean HAZ in 533 Children Aged 0–23 Months, Baseline to Endline, for All Children and for Subgroups of Children Stratified by Maternal Literacy, Huánuco Region, Peru
| Group | Control | Experimental | Paired t-test | ||||||
|---|---|---|---|---|---|---|---|---|---|
| MeanHAZ Baseline,Mean (SD) | MeanHAZEndline,Mean (SD) | Diff. of Means, Mean (SD) | MeanHAZ Baseline,Mean (SD) | MeanHAZEndline,Mean (SD) | Diff. of Means, Mean (SD) | Paired DID, Mean (SD) | T-Statistic(df) | P Value | |
| All children | −1.55 (.46) | −1.55 (.66) | −0.0002 (0.36) | −1.62 (0.47) | −1.47 (0.31) | 0.15 (0.46) | 0.15 (0.60) | 0.760 (8) | .469 |
| Stratified by literacy of mother | |||||||||
| Illiterate | −1.79 (0.51) | −1.57 (0.93) | 0.22 (0.59) | −1.77 (0.44) | −1.92 (0.44) | −0.16 (0.57) | −0.38 (0.72) | −1.561 (8) | .157 |
| Literate | −0.80 (1.13) | −1.53 (0.59) | −0.74 (1.01) | −1.60 (0.54) | −1.31 (0.28) | 0.29 (0.50) | 1.03 (1.40) | 2.202 (8) | .059 |
Abbreviations: df, degrees of freedom; DID, difference-in-differences; HAZ, height-for-age-Z-scores, SD, standard deviation.