Table 2. Phosphorylated ErbB2 expression in ALL patient samples.

	All ALL	T-ALL	B-ALL	Ph+ALL	Ph−ALL	CD34+
mean	0.0	−0.3	0.00	1.6	−0.4	0.0
SD	1.6	0.8	1.6	1.6	1.2	0.9
median	−0.3	−0.2	−0.4	1.8	−0.6	−0.1
min	−2.6	−0.2	−2.6	−1.8	−2.6	−1.8
max	5.7	1.2	5.7	4.7	5.7	1.7
>norm (%)	15.3	0.0	16.8	56.0	4.8	4.8
<norm (%)	24.1	13.3	24.8	4.0	27.9	4.8
= norm (%)	60.6	86.7	58.4	40.0	67.3	90.5
Obs Num	129	15	114	25	104	21

Log₂ expression values were median centered (median of CD34+ = 0). All ALL: combined statistics with no subgroup analysis; T-ALL: T-cell ALL samples; B-ALL: B-cell ALL samples; Ph⁺ALL: all ALL samples expressing the Philadelphia chromosome; Ph⁻ALL: samples not containing the Philadelphia chromosome; SD: standard deviation; >norm (%): percentage above values within the 95% confidence interval based on the range of expression of the normal CD34+ cells; <norm(%): percentage below values within the 95% confidence interval based on the range of expression of the normal CD34+ cells; = norm (%): percentage equal to values within the 95% confidence interval based on the range of expression of the normal CD34+ cells; Obs Num: total observed cases per subgroup.