All

Boys

Girls

Coeff.

t-stat

Coeff.

t-stat

Coeff.

t-stat

Wealth index

0.6345185

6.06***

0.6270308

4.43***

0.6472413

4.15***

Constant

−0.9181392

33.53***

−9,803,026

−25.68***

−0.8517949

−21.67***

N = 3824

N = 1 973

N = 1851

F(1, 3822) = 36.69

F(1, 1971) = 19.62

F(1, 1849) = 17.23

R2 = 0.0089

R2 = 0.0089

R2 = 0.0091