Secondary Outcomes At 8 months, the ferritin concentration was significantly higher in the delayed vs the early clamping groups (difference in geo- metric mean ratio, 33%; 95% CI, 14%-56%) (Table 2). Iron de- ficiency (60 [22.2%] vs 103 [38.1%] infants) and iron defi- ciency anemia (52 [19.3%] vs 90 [33.3%] infants) were significantly less prevalent in the delayed clamping group