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. 2016 Mar 31;11(3):e0152719. doi: 10.1371/journal.pone.0152719

Fig 2. Illustration of residual confounding.

Fig 2

(A) Simple relationship between daily swimming pool deaths and number of ice cream cones sold. (B) Relationship between daily swimming pool deaths and number of ice cream cones sold after controlling for subjective heat Likert ratings. (C) Relationship between daily swimming pool deaths and number of ice cream cones sold after controlling for recorded daily temperatures.