From: A systematic review and meta-analysis of the nutrient content of preterm and term breast milk
 | Preterm | Term | Preterm & term compared | |||||
---|---|---|---|---|---|---|---|---|
Calcium (mg/dL)♦ | ||||||||
Time frame: | mean | SD | n | mean | SD | n | % difference | p-value |
d 1-3 | 25 | 9 | 50 | 26 | 6 | 26 | −3 | 0.6 |
d 4-7 | 27 | 9 | 88 | 26 | 4 | 86 | 5 | 0.34 |
week 2 | 25 | 7 | 116 | 28 | 7 | 100 | −10 | 0.002 |
week 3-4 | 25 | 6 | 108 | 27 | 5 | 85 | −8 | 0.01 |
week 5-6 | 28 | 6 | 41 | 25 | 6 | 223 | 11 | 0.004 |
week 7-9 | 30 | 6 | 37 | 26 | 6 | 363 | 15 | 0.0002* |
week 10-12 | 29 | 5 | 30 | 27 | 3 | 13 | 6 | 0.17 |
Phosphate (mg/dL)♦♦ | ||||||||
Time frame: | mean | SD | n | mean | SD | n | % difference | p-value |
d 1-3 | 10 | 7 | 7 | 11 | 3 | 6 | −14 | 0.62 |
d 4-7 | 13 | 4 | 79 | 13 | 4 | 86 | 3 | 0.50 |
week 2 | 15 | 3 | 67 | 15 | 4 | 90 | −4 | 0.44 |
week 3-4 | 14 | 3 | 56 | 16 | 3 | 75 | −14 | 0.0004* |
week 5-6 | 13 | 2 | 33 | 16 | 3 | 213 | −16 | < 0.0001* |
week 7-9 | 14 | 2 | 29 | 16 | 3 | 363 | −13 | 0.002 |
week 10-12 | 12 | 2 | 22 | 14 | 3 | 13 | −19 | 0.03 |