Table 1.

Sibling competition for land, marriage, and reproduction

	Inheritor male	Redistribution male	Female
	Total crop yield in quintals (GLM)
Model 1	Coefficient ± SE	Coefficient ± SE	Coefficient ± SE
Intercept	7.88 ± 2.85***	10.62 ± 5.19**	NA
Family size	0.07 ± 0.16	−0.26 ± 0.23	NA
Birth order	−0.23 ± 0.85	0.39 ± 0.29	NA
Model 2
Older brothers	−0.77 ± 0.40*	0.01 ± 0.69	NA
Older sisters	−0.33 ± 0.33	−0.93 ± 0.59	NA
	Age at marriage in years (GLM)
Model 1	Coefficient ± SE	Coefficient ± SE	Coefficient ± SE
Intercept	19.11 ± 0.72***	17.05 ± 1.32***	17.35 ± 0.26***
Family size	−0.02 ± 0.04	0.06 ± 0.06	−0.00 ± 0.04
Birth order	0.06 ± 0.05	−0.02 ± 0.07	−0.02 ± 0.06
Model 2
Older brothers	0.30 ± 0.1***	0.06 ± 0.17	−0.07 ± 0.06
Older sisters	−0.01 ± 0.10	0.12 ± 0.20	−0.03 ± 0.06
	Marriage payments in Ethiopian birr
Model 1	Coefficient ± SE (GLM)	Coefficient ± SE (GLM)	Coefficient ± SE (LOG)
Intercept	2774 ± 368***	2118 ± 394***	−1.97 ± 0.29***
Family size	−24.38 ± 25.17	11.97 ± 17.23	−0.02 ± 0.04
Birth order	49.42 ± 21.04	−28.24 ± 21.50	0.25 ± 0.07***
Model 2
Older brothers	−182.85 ± 55***	−44.72 ± 53.38	0.20 ± 0.07***
Older sisters	147.96 ± 52.55***	61.95 ± 72.47	0.14 ± 0.90
	Number of surviving offspring (GLM)
Model 1	Coefficient ± SE	Coefficient ± SE	Coefficient ± SE
Intercept	−1.59 ± 0.38***	1.59 ± 0.85*	0.13 ± 0.25
Family size	0.05 ± 0.02**	0.04 ± 0.04	0.00 ± 0.04
Birth order	−0.04 ± 0.03*	0.01 ± 0.05	0.19 ± 0.06***
Model 2
Older brothers	−0.00 ± 0.06	0.17 ± 0.12	0.11 ± 0.06*
Older sisters	−0.03 ± 0.06	0.07 ± 0.09	0.07 ± 0.06
Model 3
First born	Ref	Ref	Ref
All later born	−0.42 ± 0.20**	0.27 ± 0.34	0.32 ± 0.21

Adjusted for age, size of landholdings, father's wives, sibling sex ratio at birth among inheriting males (n = 520), noninheriting males (redistribution recipients, n = 411), and noninheriting females (n = 1166) (*P < 0.1, **P < 0.05, ***P < 0.001). Ref, reference value; GLM, generalized linear model; LOG, logistic regression model.