Table 1.

Characteristics of Adolescent Patients by Implementation Phase (N = 424).

Characteristics	Pre-implementation (n = 252)	Post-implementation (n = 172)	Statistic
	Mean (SD) or n (%)	Mean (SD) or n (%)	t (df), P or χ2 (df), P
Age	15 (1.7)	15.2 (1.4)	t (420) = − 1.11, P = .27
Sex			χ2 (1) = 0.36, P = .55
Female	75 (29.8%)	46 (27.1%)
Male	177 (70.2%)	124 (72.9%)
Race/ethnicity			χ2 (3) = 4.86, P = .18
Non-Hispanic White	137 (54.4%)	101 (59.4%)
Non-Hispanic Black	33 (13.1%)	16 (9.4%)
Hispanic	48 (19%)	39 (22.9%)
Other	34 (13.5%)	14 (8.2%)
Another language in addition to English			χ2 (1) = 0.41, P = .52
Yes	52 (20.9%)	31 (18.3%)
No	197 (79.1%)	138 (81.7%)