Validation of a Questionnaire That Identifies the Reasons for Non-adherence to Existing Growth Hormone Therapy

Validation of a Patient-reported Outcome (PRO) Measure That Assesses Reasons for Non-adherence to Growth Hormone Therapy (GHT)

The aim of the study is to examine the suitability, the so-called validation, of a questionnaire, with which one can grasp the reasons why injections of growth hormones are omitted by patients ("non-adherence"). Participants are treated with growth hormone and are therefore eligible to take part in the study. Study doctor will ask participants to answer questionnaires. two times within 14 days. The first time participants answer during the routine visit to the practice / clinic and the second time at home. There are no risks associated with participating in the study as it does not affect participant's medical treatment.

Study Overview

• Status: Completed
• Conditions: Growth Hormone Deficiency in Children
• Intervention / Treatment: Other: No treatment given

• Study Type: Observational
• Enrollment (Actual): 321

Contacts and Locations

Study Locations

• Germany
  • Mainz, Germany
    • Novo Nordisk Investigational Site

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Child; Adult; Older Adult
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

• Sampling Method: Non-Probability Sample

Study Population

Three hundred (300) participants at about 30 sites for paediatric endocrinology in Germany will be included in this validation study.

Description

Inclusion Criteria: - Children/adolescents, male or female, aged 8 to 18 years who self-inject GH as well as their parents/legal guardians or Parents/Legal guardians who administer GH to a child/adolescent, male or female, from birth to 18 years - The child/adolescent is on prescribed daily GHT due to idiopathic growth hormone deficiency (GHD), multiple pituitary hormone deficiency (MPHD/organic GHD), small for gestational age (SGA) or Turner syndrome (TS) for at least 6 months before screening visit - Signed informed consent obtained by parent/legal guardian and child/adolescent before any study-related activities (study-related activities are any procedure related to recording of data according to the protocol) Exclusion Criteria: - Mental incapacity, unwillingness or language barrier of participant precluding adequate understanding or cooperation - Previous participation of participant in this study. Participation is defined as having given informed consent in this study - Treatment of child/adolescent with any investigational drug within 30 days prior to enrolment into the study

Study Plan

How is the study designed?

Design Details

• Observational Models: Cohort
• Time Perspectives: Prospective

Number of groups / cohorts

2

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
Children and adolescents; Children and adolescents, who administer growth hormone (GH) themselves (self-injections) will be asked to complete the questionnaire.	Other: No treatment given; No treatment is given to study participants. Only evaluation of a questionnaire assessing reasons for non-adherence to growth hormone therapy (GHT) and to determine its validity and reliability. The preliminary working title of the questionnaire GHCQ used in the outcome measures was renamed for simplicity reasons into BAR-GHT (abbreviation for barriers to growth hormone therapy) after study completion.
Parents/legal guardians; Parents/legal guardians who administer the GH to their child will be asked to complete the questionnaire.	Other: No treatment given; No treatment is given to study participants. Only evaluation of a questionnaire assessing reasons for non-adherence to growth hormone therapy (GHT) and to determine its validity and reliability. The preliminary working title of the questionnaire GHCQ used in the outcome measures was renamed for simplicity reasons into BAR-GHT (abbreviation for barriers to growth hormone therapy) after study completion.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Validity of the Growth Hormone Compliance Questionnaire child/adolescent version (GHCQ-CA)	The GHCQ-CA is a patient-reported outcome measure designed to assess reasons for non-adherence to growth hormone therapy in children/adolescents from the child's/adolescent's perspective. The GHCQ-CA currently has 34 items. All GHCQ-CA questions are answered on a 5-point Likert scale from 'Never' to 'Always'.	Day 1
Validity of the GHCQ-CA	The GHCQ-CA is a patient-reported outcome measure designed to assess reasons for non-adherence to growth hormone therapy in children/adolescents from the child's/adolescent's perspective. The GHCQ-CA currently has 34 items. All GHCQ-CA questions are answered on a 5-point Likert scale from 'Never' to 'Always'.	Day 14
Reliability of the GHCQ-CA	The GHCQ-CA is a patient-reported outcome measure designed to assess reasons for non-adherence to growth hormone therapy in children/adolescents from the child's/adolescent's perspective. The GHCQ-CA currently has 34 items. All GHCQ-CA questions are answered on a 5-point Likert scale from 'Never' to 'Always'.	Day 1
Reliability of the GHCQ-CA	The GHCQ-CA is a patient-reported outcome measure designed to assess reasons for non-adherence to growth hormone therapy in children/adolescents from the child's/adolescent's perspective. The GHCQ-CA currently has 34 items. All GHCQ-CA questions are answered on a 5-point Likert scale from 'Never' to 'Always'.	Day 14
Validity of the Growth Hormone Compliance Questionnaire parent version (GHCQ-P)	The GHCQ-P is a patient-reported outcome measure designed to assess reasons for non-adherence to growth hormone therapy in children/adolescents from the parents'/legal guardian's perspective. The GHCQ-P currently has 50 items. All GHCQ-P questions are answered on a 5-point Likert scale from 'Never' to 'Always'.	Day 1
Validity of the GHCQ-P	The GHCQ-P is a patient-reported outcome measure designed to assess reasons for non-adherence to growth hormone therapy in children/adolescents from the parents'/legal guardian's perspective. The GHCQ-P currently has 50 items. All GHCQ-P questions are answered on a 5-point Likert scale from 'Never' to 'Always'.	Day 14
Reliability of the GHCQ-P	The GHCQ-P is a patient-reported outcome measure designed to assess reasons for non-adherence to growth hormone therapy in children/adolescents from the parents'/legal guardian's perspective. The GHCQ-P currently has 50 items. All GHCQ-P questions are answered on a 5-point Likert scale from 'Never' to 'Always'.	Day 1
Reliability of the GHCQ-P	The GHCQ-P is a patient-reported outcome measure designed to assess reasons for non-adherence to growth hormone therapy in children/adolescents from the parents'/legal guardian's perspective. The GHCQ-P currently has 50 items. All GHCQ-P questions are answered on a 5-point Likert scale from 'Never' to 'Always'.	Day 14

Collaborators and Investigators

• Sponsor: Novo Nordisk A/S

Publications and helpful links

General Publications

• de Zwaan M, Fischer-Jacobs J, Wabitsch M, Reinehr T, Meckes-Ferber S, Crosby RD. Development and Psychometric Evaluation of an Instrument Assessing Barriers to Growth Hormone Treatment (BAR-GHT). Front Endocrinol (Lausanne). 2020 Feb 25;11:84. doi: 10.3389/fendo.2020.00084. eCollection 2020.

Study record dates

Study Major Dates

• Study Start (Actual): October 2, 2018
• Primary Completion (Actual): April 25, 2019
• Study Completion (Actual): April 25, 2019

Study Registration Dates

• First Submitted: September 7, 2018
• First Submitted That Met QC Criteria: September 13, 2018
• First Posted (Actual): September 14, 2018

Study Record Updates

• Last Update Posted (Actual): September 23, 2019
• Last Update Submitted That Met QC Criteria: September 19, 2019
• Last Verified: September 1, 2019

More Information

Terms related to this study

• Other Study ID Numbers: GH-4415; U1111-1210-1036 (Other Identifier: World Health Organization (WHO))

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: Yes
• IPD Plan Description: According to the Novo Nordisk disclosure commitment on novonordisk-trials.com

Drug and device information, study documents

• Studies a U.S. FDA-regulated device product: No