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. 2017 Jun;94:448–464. doi: 10.1016/j.worlddev.2017.02.007

Table 6.

Testing heterogeneity of HAZ results across major regions

Sample Middle East & North Africa Latin America & Caribbean South Asia Sub-Saharan Africa
Dependent variable HAZ HAZ HAZ HAZ
Country-varying controls? Yes Yes Yes Yes
Community Fixed effects Yes Yes Yes Yes
Education rank included? Yes Yes Yes Yes



Maternal education
4–6 years 0.038 0.050∗∗∗ 0.055∗∗ 0.012
(0.030) (0.015) (0.025) (0.015)
7–9 years −0.006 0.099∗∗∗ 0.092∗∗∗ 0.041∗∗
(0.032) (0.021) (0.030) (0.018)
10–12 years 0.064 0.163∗∗∗ 0.205∗∗∗ 0.133∗∗∗
(0.040) (0.028) (0.041) (0.024)
13 plus 0.088 0.255∗∗∗ 0.375∗∗∗ 0.241∗∗∗
(0.056) (0.036) (0.055) (0.037)



Paternal education
4–6 years −0.008 −0.003 0.019 0.015
(0.028) (0.015) (0.025) (0.014)
7–9 years 0.002 0.022 0.078∗∗∗ 0.046∗∗∗
(0.033) (0.020) (0.029) (0.017)
10–12 years −0.019 0.045 0.151∗∗∗ 0.083∗∗∗
(0.044) (0.027) (0.039) (0.022)
13+ years 0.004 0.031 0.230∗∗∗ 0.166∗∗∗
(0.060) (0.035) (0.051) (0.029)



63% 90% 99% 53%
Significant gender differences?a No Yes: All levels Yes: 10–12 Yes: 10–12
Significant non-linearity?b Yes (women) No (marginal) Yes: Both sexes Yes: Both sexes
Sample size 41,075 84,015 51,286 179,779

Notes: Cluster-robust standard errors reported in parenthesis. Clustering is at the enumeration level. ∗, ∗∗, and ∗∗∗ indicate significance at the 10%, 5% and 1% significance levels respectively. The regression models are analogous to regression 3 from Table 3. a. This test is a Wald test comparing maternal and paternal coefficients across categories; significance refers to the 10% level or lower. b. This is a test of coefficient proportionality; significance refers to the 10% level or lower.