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. 2021 Feb 3;13(3):223–229. doi: 10.1177/1941738120970956

Table 4.

Least-squares mean estimates for Youth Throwing Score (YTS) based on multivariate linear regression

YTS Least-Squares Mean Estimate (SE) P a
Sport specialization scale
 Low 61.1 (1.2) 0.59b
 Moderate 60.1 (1.3) 0.09c
 High 56.9 (1.6) 0.01d
Pitcher as one of the positions
 Yes 57.5 (1.1) <0.01
 No 61.3 (1.4)
Regular travel for showcases
 Yes 56.5 (2.0) 0.01
 No 62.2 (0.7)
a

Model includes specialization, age, hours per week of baseball, pitching in previous year, and regular travel for showcases. Adjusted R2 for model: 0.17.

b

Comparison between low and moderate specialization categories.

c

Comparison between moderate and high specialization categories.

d

Comparison between low and high specialization categories.