Table 2.

Univariate and multivariate linear regression analysis of CD34⁺ cell recovery

		Univariate analysis			Multivariate analysis*
	Reference	r 2	Regression coefficient (95% CI)	P	r 2	Regression coefficient (95% CI)	P
Transit time	NA	0.038	−0.25†	.001	0.121	−0.26	>.001
			(−0.39 to −0.11)			(−0.41 to −0.12)
Initial WCC	NA	0.032	−0.03	.002	0.121	−0.04	>.001
			(−0.05 to −0.01)			(−0.06 to −0.02)
Initial volume	NA	0	0	.664	—	N/A	—
			(−0.01 to 0.012)
Product type	HPC-A	0.020	13.36	.013	—	N/A	—
			(2.85 to 23.89)
Manipulation	Plasma reduction/none	0.050	−23.07	<.001	0.121	−18.5	.001
			(−34.42 to −11.72)			(−29.80 to −7.20)

CI, confidence interval.

^*Variables included in original model: transit time, initial WCC, initial volume, product type, manipulation, processing center.

^†The predicted CD34⁺ recovery decreased by 0.25% for each additional hour of transit time.