Table 1. Linear regression with... | American Society of Hematology

Table 1.

Linear regression with accounting for clustering of observations by patient

		Full-scale IQ			Performance IQ			Verbal IQ
Variable	No. observations (no. patients)	Coef.	P	Coef.	P	Coef.	P
Age, y	37 (24)	0.047	.51	0.058	.36	0.013	.89
CBF, mL/100 g/min
Anterior	19 (16)	−0.13	.30	−0.14	.01	−0.09	.25
Left	19 (16)	−0.14	.07	−0.15	.02	−0.09	.34
Right	19 (16)	−0.13	.04	−0.14	.01	−0.09	.27
Total	19 (16)	−0.14	.05	−0.15	.01	−0.09	.30
PCV, %	37 (24)	1.2	.21	0.34	.73	1.65	.07
Platelets, per 10⁹/L	35 (23)	−0.01	.37	−0.003	.85	−0.02	.10
WBC count, per 10⁹/L	35 (23)	−1.4	.05	−0.8	.21	−1.6	.04
Maximum CBFV	36 (24)	0.57	.82	2.0	.40	−0.56	.85
Hemoglobin F	30 (22)	0.33	.53	0.02	.96	0.53	.42

		Full-scale IQ			Performance IQ			Verbal IQ
Variable	No. observations (no. patients)	Coef.	P	Coef.	P	Coef.	P
Age, y	37 (24)	0.047	.51	0.058	.36	0.013	.89
CBF, mL/100 g/min
Anterior	19 (16)	−0.13	.30	−0.14	.01	−0.09	.25
Left	19 (16)	−0.14	.07	−0.15	.02	−0.09	.34
Right	19 (16)	−0.13	.04	−0.14	.01	−0.09	.27
Total	19 (16)	−0.14	.05	−0.15	.01	−0.09	.30
PCV, %	37 (24)	1.2	.21	0.34	.73	1.65	.07
Platelets, per 10⁹/L	35 (23)	−0.01	.37	−0.003	.85	−0.02	.10
WBC count, per 10⁹/L	35 (23)	−1.4	.05	−0.8	.21	−1.6	.04
Maximum CBFV	36 (24)	0.57	.82	2.0	.40	−0.56	.85
Hemoglobin F	30 (22)	0.33	.53	0.02	.96	0.53	.42

CBFV indicates cerebral blood flow velocity (z score); Coef., coefficient.