Newborn Screening for Severe Combined Immunodeficiency: Lessons Learned from Screening and Follow-Up of the Preterm Newborn Population.

Although the groups showed a strong trend of decreasing MoM with increasing weight ( p < 0.001; Jonckheere’s test), individual comparisons among the three groups (without regard to the ordering of categories) found no real difference between ELBW and VLBW ( p = 0.201; Steel-Dwass multiple comparison procedure) while each of the two lower groups both differed from the LBW group ( p < 0.001 for each; Steel-Dwass).

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