Table 3.

Linear regression model for SPFL as dependent variable and HPL as independent variable

	Unstandardized Coefficients		Standardized Coefficients			95% confidence interval for B
	B	Std. Error	Beta	t	Sig.	Lower Bound	Upper Bound
HPL	.31	.08	.25	3.73	<.001	.15	.48

Note: SPFL and HPL are presented after adjusting for the covariates gender, age and level of education