Content validation of Comprehensive knee osteoarthritis index (CKOAI) scoring items by online Delphi method

The content validation of identified items identified by In-depth direct interview and extensive literature survey were executed by the online Delphi method. This Delphi method involved panel of 10 experts in the field of physiotherapy who had at least minimum 10 years of clinical experience from different geographical location to represent and identify the patient need. They were asked to agree or disagree with items and domains listed for validate. 80% of agreement on items and domains listed for validate between the experts was fixed in recommendation by Lynn to yield the item-level content validation index (I-CVI) of 0.80. Thus total two rounds of online Delphi method were executed to validate the items identified by In-depth direct interview and extensive literature survey related to individuals with knee osteoarthritis.