Clinical evaluation study of the German network of disorders of sex development (DSD)/intersexuality: study design, description of the study population, and data quality

Table 4 Percentage of missing of entire questionnaires, single items and scores in standardized instrument^#.

	% non-response to entire questionnaires	% missing items in questionnaires completed	% missing sub-scale scores
Children/adolescents
- KINDL	10.8	0.8	1.0
- SDQ	9.1	0.0	0.0
- CODI	10.6	0.4	0.3
- FKSI	12.1	1.3	0.7
- GII	18.2	4.0	*
- UGDS	9.1	2.4	*
- GRQ	10.9	3.2	*
- SS-A	10.6	2.1	0.0
- BI-I	9.1	2.2	0.5
Parents
- KINDL	1.3	1.8	1.8
- SDQ	1.7	0.1	0.1
- CBAQ	2.4	10.3	2.9
- PSI	0.0	0.6	0.8
- CHC-SUN	0.3	4.9	7.3
Adults
- SF-36	0.0	0.4	0.1
- BSI	0.0	0.1	0.0
- FGI	0.0	1.4	1.2
- SS-A	0.0	0.7	0.0
- CSQ-8	0.0	0.8	*
- BI-I	0.0	2.8	2.7

BI-1: Body Image Scale, BSI: Brief Symptom Inventory, CBAQ: Child Behavior and Attitudes Questionnaire, CHC-SUN: (Child Health Care – Satisfaction, Utilization and Needs, CODI: Coping questionnaire for children and adolescents, CSQ-8: Client satisfaction questionnaire, DSD: Disorder of Sex Development, FGI: Questionnaire of Gender Identity, FKSI: Frankfurt children's self-concept inventory, GRQ: Gender Role Questionnaire, GII: Gender Identity Interview, KINDL: Questionnaire for measuring health-related quality of life in children and adolescents, PSI: Parenting Stress Index, SDQ: Strengths and Health Questionnaire, SF-36: Health Survey, UGDS: Utrecht Gender Dysphoria Scale
* = not applicable
# The percentages for items and for subscale scores are averaged over all items or subscale scores of the questionnaire. The calculations for these two columns do not include those persons who omitted the entire questionnaire (cf. second column).

ISSN: 1471-2458