Table 1. Regression Analysis Predicting Overall Sports Participation Rate by a Sample of Middle School Students (N = 329), North Carolina, 2008–2009.

School Characteristic	β Unstandardized Coefficients (SE) (95% CI)	β Standardized Coefficientsa	T Value	P Value
Constant	.608 (.016) (.575 to 640)	NA	36.92	<.001
Sixth-graders (%)	−.029 (.016) (−.059 to −.002)	−.027	−1.82	.069
Race other than white (%)	−.064 (.007) (−.077 to −.050)	−.163	−9.28	<.001
Economically disadvantaged (%)	−.184 (.010) (−.204 to −.165)	−.324	−18.25	<.001
Offers interscholastic sports	.050 (.015) (.020 to 079)	.049	3.29	.001
Offers intramural sports	.161 (.003) (.155 to 167)	.837	56.56	<.001

Abbreviations: SE, standard error; CI, confidence interval; NA, not applicable.

^a R² = .93.