Psychometric properties of Internet-administered measures of health anxiety: An investigation of the Health Anxiety Inventory, the Illness Attitude Scales, and the Whiteley Index

The health preoccupation diagnostic interview: inter-rater reliability of a structured interview for diagnostic assessment of DSM-5 somatic symptom disorder and illness anxiety disorder

“…"), rendering a total HAI score between 0 and 192. The HAI has good psychometric properties when administered via the Internet (Hedman et al, 2015).…”

Cost-effectiveness and long-term follow-up of three forms of minimal-contact cognitive behaviour therapy for severe health anxiety: Results from a randomised controlled trial

“…The Health Anxiety Inventory exists in one original 64-item version (HAI), and two shortened 18-item and 14-item versions (SHAI) 84 . The HAI and SHAI have both gained recognition as psychometrically sound 14,84,85 , and like the WI and IAS, the HAI and SHAI have also been used as primary outcome in clinical trials [86][87][88] .…”

“…These have typically been interpreted as (I) illness likelihood (i.e., the fear of, and conviction of having, a serious illness), (II) negative consequences (i.e., catastrophic beliefs about having a serious illness), and in the case of three factors: (III) body vigilance 14,84 . On the whole, facets of health anxiety have varied much between different scales and populations 80,85,89 . This being said, my impression is that (a) the fear or conviction of being ill and (b) bodily preoccupation or vigilance both appear to have explained a significant amount of variance, and emerged as distinct though correlated factors, in many studies.…”

Exposure-based cognitive–behavioural therapy via the internet and as bibliotherapy for somatic symptom disorder and illness anxiety disorder: randomised controlled trial

“…Participants completed all assessments via the internet, which has been shown to be a reliable administration format. 14,23 Potential mediators, which will be reported elsewhere, were measured on a weekly basis. Participants in all conditions received weekly automated SMS reminders to complete these measures.…”