showed a trendP = .07
Potential confounding factors Although iron deficiency’s potential impact on PROs was not analyzed due to the low prevalence of abnormal hemoglobin levels (4.5% of the cohort), patients receiving iron supplementation ( n = 53) showed a trend toward lower SF-36 mental scores (mean MCS, 42) than untreated patients ( n = 133; mean MCS, 45; P = .07).