Table 6. Correlation Coefficients (r) Between Indicators of Clinical Status and Lymphocyte Proliferative Responses to Phytohemagglutinin (PHA) (corrected for baseline 3H-thymidine uptake) in Children With Sickle Cell Disease.
Variable | PHA 2.5 μg/mL | PHA 5 μg/mL | PHA 10 μg/mL | PHA 15 μg/mL |
---|---|---|---|---|
Retinol binding protein | 0.242a | 0.307a | 0.349a | 0.367a |
Health scoreb | −0.319a | −0.272a | −0.287a | −0.326a |
Pain crises | −0.252a | −0.182 | −0.195 | −0.195 |
Units of blood | −0.195 | −0.243a | −0.266a | −0322a |
Infections | −0.151 | −0.138 | −0.172 | −0.042 |
The (r) value is significantly different from zero (P < 0.05).
Health score is the sum of the number of episodes of pain crisis, infection, hospital admission, and/or blood units received.