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Table 4 Item level CVI (I-CVI) and ADM index values for IDUQOL measure and manual elements

From: Injection Drug User Quality of Life Scale (IDUQOL): Findings from a content validation study

IDUQOL Content Validity Questionnaire Itema

I-CVI

ADM Index

Clarity of Title

0.83

.67

Clarity of Intended Population

1.00

.00

Administration Procedure – Introduction

1.00

.28

Administration Procedure – Respondent Selects Life Areas

1.00

.44

Administration Procedure – Respondent Rates Importance

1.00

.00

Administration Procedure – Respondent Rates Satisfaction

1.00

.00

Response Format – Easy for Respondent to Use Chips

0.83

.67

Response Format – Easy for Respondent to Use Smiley Faces

0.83

.67

Scoring Procedure – Relative Importance Score

1.00

.44

Scoring Procedure – Importance × Satisfaction Score

1.00

.44

Scoring Procedure – Obtain Summed Score

0.83

.67

Example – Relative Importance Score

1.00

.00

Example – Importance × Satisfaction Score

1.00

.00

Example – Completed Sample Record Form

1.00

.00

Ease of the Record Form to Use

1.00

.28

  1. a Ratings were made on a 4-point scale.
  2. Note. I-CVI: 1.00 = endorsement by all six subject matter experts (SMEs); 0.83 = endorsement by five of six SMEs. ADM Index: with a 4-point scale, acceptable values are .69 or less and statistically significant values are .44 or less. Values that are acceptable, but not statistically significant, are bolded.