Research Article
Impact of Formal Financial Market Participation on Farm Size and Expenditure on Variable Farm Inputs: The Case of Maize Farmers in Ghana
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 | 0.209 | 0.021 | 0.000 | 0.399 | 21.6 | 7.6 | 64.7 | Expenditure on variable inputs per hectare | 0.209 | 0.020 | 0.000 | 0.308 | 8.2 | 12.1 | 47.8 |
| Calliper | Farm size | 0.209 | 0.017 | 0.000 | 0.555 | 21.6 | 5.8 | 73.0 | Expenditure on variable inputs per hectare | 0.209 | 0.018 | 0.000 | 0.456 | 8.2 | 11.6 | 40.8 |
| Kernel base matching | Farm size | 0.213 | 0.026 | 0.000 | 0.268 | 21.6 | 5.6 | 73.0 | Expenditure on variable inputs per hectare | 0.209 | 0.020 | 0.000 | 0.308 | 8.2 | 12.1 | 47.5 |
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Source: author’s calculations.
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