TO THE EDITOR: In their Methods section, Smith-Spangler and colleagues (1) state that they "evaluated the extent to which the organic—conventional comparison pairs were of the same cultivar or breed, grown on neighboring farms, and harvested during the same season." However, in their Results section, they admitted that they included a significant percentage of pairs in their meta-analysis that compared different cultivars and that did not come from neighboring fields ("Among produce studies, 59% . . . and 65% . . . compared food pairs from neighboring farms or the same cultivar, respectively."). Thus, 41% of the pairs were not grown on neighboring farms and 35% did not compare identical cultivars.
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