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TABLE 1

Demographic Characteristics of All Youth by Age at First Visit

YPY (n = 116)OPY (n = 184)P
Age at first visit, y, median (IQR) 13.9 (12.9–14.5) 16.3 (15.6–16.8) <.001 
 Range 10.5–14.9 15.0–17.9  
AFAB, n (%) 87 (75.0) 142 (77.2) .67 
Cohort, n (%)   .03 
 1 65 (56.0) 126 (68.5)  
 2 51 (44.0) 58 (31.5)  
Time from referral to first visit, mo, median (IQR)a 3.6 (2.1–5.5) 3.3 (2.3–5.6) .73 
Tanner stage category, n (%)   <.001 
 Pre or early: 1, 2, or 3b 24 (20.7) 2 (1.1)  
 Late: 4 or 5 82 (70.7) 166 (90.2)  
 Not reported 10 (8.6) 16 (8.7)  
Socially transitioned, n (%) 76 (65.5) 149 (81.0) .002 
Autism spectrum disorder, n (%) 7 (6.0) 11 (6.0) .98 
Ethnicity, n (%)   .91 
 White 53 (45.7) 94 (51.1)  
 Indigenous (First Nations, Inuit, Métis) 4 (3.4) 5 (2.7)  
 Other nonwhite 8 (6.9) 17 (9.2)  
 >1 ethnicity 9 (7.8) 13 (7.1)  
 Unknown and/or not reported 42 (36.2) 55 (29.9)  
YPY (n = 116)OPY (n = 184)P
Age at first visit, y, median (IQR) 13.9 (12.9–14.5) 16.3 (15.6–16.8) <.001 
 Range 10.5–14.9 15.0–17.9  
AFAB, n (%) 87 (75.0) 142 (77.2) .67 
Cohort, n (%)   .03 
 1 65 (56.0) 126 (68.5)  
 2 51 (44.0) 58 (31.5)  
Time from referral to first visit, mo, median (IQR)a 3.6 (2.1–5.5) 3.3 (2.3–5.6) .73 
Tanner stage category, n (%)   <.001 
 Pre or early: 1, 2, or 3b 24 (20.7) 2 (1.1)  
 Late: 4 or 5 82 (70.7) 166 (90.2)  
 Not reported 10 (8.6) 16 (8.7)  
Socially transitioned, n (%) 76 (65.5) 149 (81.0) .002 
Autism spectrum disorder, n (%) 7 (6.0) 11 (6.0) .98 
Ethnicity, n (%)   .91 
 White 53 (45.7) 94 (51.1)  
 Indigenous (First Nations, Inuit, Métis) 4 (3.4) 5 (2.7)  
 Other nonwhite 8 (6.9) 17 (9.2)  
 >1 ethnicity 9 (7.8) 13 (7.1)  
 Unknown and/or not reported 42 (36.2) 55 (29.9)  

Continuous variables were not normally distributed and are presented as median and IQR.

a

Not recorded for 20 subjects (11 OPY and 9 YPY).

b

Three youth were prepubertal at the time of the first clinic visit.

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