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Vitamin D status vs risk of hospital-acquired Clostridium difficile infection. Locally weighted scatter plot smoothing was used to represent the near-inverse linear association between prehospital 25(OH)D level and risk of HACDI. Plot constructed with data from inpatients with prehospital vitamin D status and toxin A or B measured in stool samples (n = 568). HACDI, hospital-acquired C difficile infection; 25(OH)D, 25-hydroxyvitamin D.
