Table 4: Indicators of matching quality before and after matching.

Matching
algorithm
Outcome
indicator

unmatched

matched
value
unmatched
value
matched
Mean absolute
bias unmatched
Mean absolute
bias matched
Absolute bias
reduction

Nearest
neighbour
Farm size 0.2090.0210.0000.39921.67.664.7
Expenditure on variable inputs per hectare 0.2090.0200.0000.3088.212.147.8

CalliperFarm size 0.2090.0170.0000.55521.65.873.0
Expenditure on variable inputs per hectare 0.2090.0180.0000.4568.211.640.8

Kernel base
matching
Farm size 0.2130.0260.0000.26821.65.673.0
Expenditure on variable inputs per hectare 0.2090.0200.0000.3088.212.147.5

Source: author’s calculations.