Table 1.

Characteristics of transgender and cisgender students on matching variables before and after propensity score matching

	Before matching			After matching
Variable	Transgender (n=186) No. (%)	Cisgender (n=8669) No. (%)	Standardized mean difference	Transgender (n=186) No. (%)	Cisgender (n=356) No. (%)	Standardized mean difference	% balance improvement
Sex
Male	86 (46.2%)	4211 (48.6%)	−0.05	86 (46.2%)	167 (46.9%)	−0.01	77%
Female	100 (53.8%)	4458 (51.4%)	-	100 (53.8%)	189 (53.1%)	-	-
Age
13 years	2 (1.1%)	20 (0.2%)	-	2 (1.1%)	3 (0.8%)	-	-
14 years	21 (11.3%)	1323 (15.3%)	−0.13	21 (11.3%)	38 (10.7%)	0.00	100%
15 years	49 (26.3%)	2286 (26.4%)	−0.00	49 (26.3%)	95 (26.7%)	0.00	100%
16 years	48 (25.8%)	2340 (27.0%)	−0.03	48 (25.8%)	94 (26.4%)	0.00	100%
17 years	41 (22.0%)	1912 (22.1%)	0.00	41 (22.0%)	78 (21.9%)	0.00	100%
≥18 years	25 (13.4%)	788 (9.1%)	0.13	25 (13.4%)	48 (13.5%)	0.00	100%
Race/Ethnicity
Hispanic	80 (43.0%)	3611 (41.7%)	-	80 (43.0%)	154 (43.3%)	-	-
Non-Hispanic Black	61 (32.8%)	2992 (34.5%)	−0.04	61 (32.8%)	118 (33.1%)	0.00	84%
Non-Hispanic White	30 (16.1%)	1334 (15.4%)	0.02	30 (16.1%)	57 (16.0%)	0.00	100%
Othera	15 (8.1%)	732 (8.4%)	−0.01	15 (8.1%)	27 (7.6%)	0.01	29%
School
A	32 (17.2%)	1672 (19.3%)	-	32 (17.2%)	61 (17.1%)	-	-
B	23 (12.4%)	1315 (15.2%)	−0.08	23 (12.4%)	43 (12.1%)	0.00	100%
C	30 (16.1%)	1133 (13.1%)	0.08	30 (16.1%)	55 (15.4%)	0.01	91%
D	18 (9.7%)	1105 (12.7%)	−0.10	18 (9.7%)	35 (9.8%)	0.00	100%
E	30 (16.1%)	1116 (12.9%)	0.09	30 (16.1%)	59 (16.6%)	−0.01	92%
F	17 (9.1%)	811 (9.4%)	−0.00	17 (9.1%)	33 (9.3%)	0.00	100%
G	36 (19.4%)	1517 (17.5%)	0.05	36 (19.4%)	70 (19.7%)	0.00	100%

^aOther race category includes Native American, Native Hawaiian/Pacific Islander, and multiracial