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Table 1 Overview, detailing the reliability, validity, scale, and scoring of the evaluated scales used in this study

From: Only the anxious ones? Identifying characteristics of symptom checker app users: a cross-sectional survey

Concept

Title of the Instument (Abbreviation)

Reliability

Validity

Number of Items

Scale

Score (Range)

Life satisfaction

General Life Satisfaction Short Scale (23)

(L1)

retest = 0.82 (23)

evidence for construct validity (23)

1

10 point Likert

Sum Score

(0–10)

eHealth literacy

German Version of the eHealth Literacy Scale (24)

(G-eHeals)

Cronbach’s

α = 0.83-0.88 (24)

construct validity was supported by correlation patterns with different scales and constructs (24)

8

5 point Likert

Sum Score

(0–40)

Hypochondria

Whiteley Index (25)

(WI)

Cronbach’s α = 0.76–0.8 (26)

high associations with health anxiety and illness behavior subscales

(26)

14

binary

(„yes“ / „no“)

Sum Score

(0–14)

Self-efficacy

General self-efficacy short scale (27)

(ASKU-S)

McDonalds

ω = 0.81 bis 0.87 (27)

Indications of content, factorial, convergent, discriminant and predictive validity

(27)

3

5 point Likert

Mean Score

(1–5)

Technic affinity

Ultra-Short Scale for Assessing Affinity for

Technology Interaction (28)

(ATI-S)

McDonalds ω=>0.8 (28)

sufficiently

valid assessment (28)

4

6 point Likert

Mean Score

(1–6)