“Tertius gaudens”: germplasm exchange networks and agroecological knowledge among home gardeners in the Iberian Peninsula

Table 5 Robustness analysis

Changes:		*Degree*	*Broker*
[1]	Core model (as in Table 3)	0.004 (0.009)	0.279*** (0.099)
[2]	Controlling for the migratory status of the person	0.003 (0.009)	0.287*** (0.101)
[3]	Controlling for participation in organizations	0.001 (0.009)	0.300*** (0.099)
[4]	Clustering by seed exchange networks	0.004 (0.012)	0.279* (0.171)
[5]	Excluding dummies for village of residency	0.005 (0.009)	0.230** (0.096)
[6]	Using Z-score value for agroecological knowledge score (and Ordinary Least Square regression model)	0.025 (0.024)	0.737** (0.316)

Note: Regressions resemble the model in Table 3, except for the changes specified in the column “Changes”. Robust standard errors in parenthesis. *, **, and *** significant at the 10%, 5% and 1% level.

ISSN: 1746-4269