Asthma Predictive Index (API) and Modified Asthma Predictive Index (mAPI) criteria

	API	mAPI
Positive index requirements: Wheezing plus at least 1 major criterion or 2 minor criteria	≥4 wheezing episodes in a year Loose – Any wheezing Stringent – Early frequent wheezing	≥4 wheezing episodes in a year
Major criteria	Physician-diagnosed asthma in a parent Physician-diagnosed eczema	Parental physician-diagnosed asthma Physician-diagnosed atopic dermatitis Allergic sensitization to at least one aeroallergen
Minor criteria	Physician-diagnosed allergic rhinitis Wheezing unrelated to colds Eosinophils ≥4% in circulation	Allergic sensitization to cow's milk, hen's egg, or peanuts Wheezing unrelated to colds Eosinophils ≥4% in circulation

References:

Castro-Rodriguez JA, Holberg CJ, Wright AL, Martinez FD. A clinical index to define risk of asthma in young children with recurrent wheezing. Am J Respir Crit Care Med 2000; 162:1403.
Chang TS, Lemanske RF Jr, Guilbert TW, et al. Evaluation of the modified asthma predictive index in high-risk preschool children. J Allergy Clin Immunol Pract 2013; 1:152.

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