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Table 1 Scale used for pairwise comparisons in the analytic hierarchy process

From: Integrating expert knowledge in a GIS to optimize siting decisions for small-scale healthy food retail interventions

Intensity of importance Definition
1 Equal importance
3 Moderately more important
5 Strongly more important
7 Very strongly more important
9 Extremely more important
2, 4, 6, 8 Intermediate values