Table 1.

Participant demographics and sport participation characteristics (N = 246)

Variable	N (%), Mean ± SD, or Median [IQR]
Sex
Male	241 (98.0)
Female	5 (2.0)
Age, y	9.5 ± 1.6
Baseball start age, y	5.3 ± 1.6
Years of baseball participation	4.2 ± 2.0
Months/year of organized baseball	7.2 ± 2.7
Hours/week of organized baseball	9 (6-15)
Primary position
Pitcher	38 (15.7)
Catcher	44 (18.1)
First base	36 (14.8)
Second base	29 (11.9)
Shortstop	34 (14.0)
Third base	25 (10.3)
Outfield	37 (15.2)
Specialization scale
Low	134 (54.5)
Moderate	83 (33.7)
High	29 (11.8)
Youth Throwing Score	61.8 ± 7.7
Travel overnight regularly for showcases
Yes	13 (5.3)
No	233 (94.7)
Receive private coaching outside of league
Yes	81 (32.9)
No	165 (67.1)
Participate in baseball >8 months per year
Yes	77 (31.3)
No	169 (68.7)
Hours/week of organized baseball > Age
Yes	106 (44.5)
No	132 (55.5)
Pitched in previous year
Yes	184 (75.1)
No	61 (24.9)