Use of fertility preservation services in our study population, subdivided by groups based upon receiving information about fertility preservation, groups who underwent psychological evaluation, who initiated gender affirming hormones and groups based upon geographical region. Missing data were not included in this analysis (TW: %, GNB: 5, 8.9%). Differences between groups were calculated by Fisher’s exact t test. Other factors that did not significantly affect the use of fertility preservation services among the study population (gender identity groups: P = 0.362, sexual attration (P-values range 0.121–1.000), parental desire: P = 0.325, having accessed health care: P = 0.181, underwent breast augmentation: P = 0.116, orchiectomy: P = 0.084 or vaginoplasty: P = 0.097, economic status: P = 0.245, educational level: P = 0.239, mother tongue: P = 0.063) were not included.