Table 1.

Definition of “completed treatment years” according to the number of AIT prescriptions per patient

Completed treatment years		≥1 year	≥2 years	≥3 years
Number of prescriptions (Rx)*	Preseasonal SCIT	≥1 Rx	≥2 Rx	≥3 Rx
	Perennial SCIT	≥2 Rx	≥3 Rx	≥5 Rx
	SLIT	≥2 Rx	≥5 Rx	≥8 Rx

Note:

^*Maintenance treatment sets containing two vials were counted as two units.

Abbreviations: AIT, allergen immunotherapy; SCIT, subcutaneous immunotherapy; SLIT, sublingual immunotherapy.