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Accepted for/Published in: JMIR Research Protocols

Date Submitted: Sep 10, 2025
Date Accepted: Apr 22, 2026

The final, peer-reviewed published version of this preprint can be found here:

Mental Health, Gender Dysphoria, and Quality of Life in Trans Individuals Following Top Surgery: Protocol for a Prospective Cohort Study

Bak J, Tan KA, Ball J, Bonney S, Moore JK, Cavve BS, Marion L, Hewitt T, Zwickl S, Mahfouda S, Lin A, Strauss P

Mental Health, Gender Dysphoria, and Quality of Life in Trans Individuals Following Top Surgery: Protocol for a Prospective Cohort Study

JMIR Res Protoc 2026;15:e83928

DOI: 10.2196/83928

PMID: 42628000

Mental Health, Gender Dysphoria, and Quality of Life in Trans Individuals Following Top Surgery: A Prospective Cohort Study Protocol

  • Julia Bak; 
  • Kah Aik Tan; 
  • Jack Ball; 
  • Sam Bonney; 
  • Julia K. Moore; 
  • Blake S. Cavve; 
  • Larissa Marion; 
  • Tim Hewitt; 
  • Sav Zwickl; 
  • Simone Mahfouda; 
  • Ashleigh Lin; 
  • Penelope Strauss

ABSTRACT

Background:

Top surgery refers to various gender-affirming surgical procedures involving breast or chest tissue. Existing research suggests top surgery improves physical, psychological, and social well-being in trans individuals who desire it. However, most studies have been retrospective, have not used validated outcome measures, and excluded non-binary individuals, limiting the robustness of the existing research.

Objective:

This study aims to longitudinally examine the impact of top surgery on mental health, gender dysphoria, and quality of life of trans people, including both binary and non-binary individuals.

Methods:

Trans individuals aged 16 and older undergoing top surgery will be recruited from a single surgeon’s office in Perth, Western Australia, as part of a longitudinal prospective cohort study. Questionnaires will be administered to participants at three timepoints: 6–8 weeks pre-surgery, 6–8 weeks post-surgery, and 1-year post-surgery. Patient-reported outcomes will be measured using validated instruments and bespoke items developed through community consultation. Surgical satisfaction will be assessed using both patient- and surgeon-reported measures, enabling between-group comparisons.

Results:

Quantitative data will be analyzed using linear regression models and repeated measures ANOVA; qualitative data will undergo reflexive thematic analysis.

Conclusions:

This study will extend current research on the mental health, gender dysphoria, and quality of life outcomes of top surgery for trans individuals. By incorporating a longitudinal design, validated measures, and inclusion of non-binary participants, this research aims to improve the understanding of trans people’s experience of accessing and receiving top surgery.


 Citation

Please cite as:

Bak J, Tan KA, Ball J, Bonney S, Moore JK, Cavve BS, Marion L, Hewitt T, Zwickl S, Mahfouda S, Lin A, Strauss P

Mental Health, Gender Dysphoria, and Quality of Life in Trans Individuals Following Top Surgery: Protocol for a Prospective Cohort Study

JMIR Res Protoc 2026;15:e83928

DOI: 10.2196/83928

PMID: 42628000

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