TABLE 1.

Criteria for relevance, applicability and practicality of the HRQoL instrument.

Criteria	Definition
Language clarity	Wording should be clear, understandable, simple, unambiguous and jargon free. Should be understood by someone with reading ability of a 12 year old (Streiner and Normal, 2003).
Completeness	Sentences should be complete, unbroken and should end appropriately (Guyatt et al., 1993).
Relevance	Each item should reflect as HRQoL and symptoms, important to patients with hematological malignancy, and also relevant to the construct being measured (Leidy et al., 1999).
Scaling response	The choice of response option must fit the items and be appropriate to the construct being measured (DeVellis, 2016)