Table 3.
Values for Three Categories of Initiation Time Point of Breastmilk Expression for Comparison with Two Categories (Up to 6 Hours Versus More Than 6 Hours)
| Within 1 hour (n=10) | >1 and ≤6 hours (n=10) | After 6 hours (n=20) | p valuea | |
|---|---|---|---|---|
| Breastmilk (mL) | ||||
| Initial amount | 0.1 (0–0.3) | 0 (0–0.1) | 0 (0–0) | 0.002 |
| Day 1 | 7.0 (0–28.8) | 0.01 (0–0.4) | 0 (0–3.5) | 0.122 |
| Day 2 | 16.0 (4.1–106.7) | 0.5 (0–2.0) | 4.3 (1.5–17.1) | 0.009 |
| Day 3 | 88.0 (14.2–208.8) | 19.5 (0–45.2) | 11.5 (1.5–45.4) | 0.099 |
| Day 4 | 88.5 (62.2–399.7) | 28.2 (15.3–40.8) | 49.4 (13.9–183.4) | 0.213 |
| Day 5 | 232.4 (95.2–405.7) | 71.3 (34.9–117.8) | 112.1 (50.5–162.4) | 0.099 |
| Day 6 | 294.0 (182.8–370.7) | 217.7 (79.2–267.0) | 87.1 (50.4–140.2) | 0.003 |
| Day 7 | 306.2 (244.0–384.3) | 180.7 (80.8–253.2) | 125.7 (65.3–192.7) | 0.005 |
| Week 3 (n=23) | 543.5 (466.1–818.1) | 238.9 (87.8–442.0) | 224.3 (100.7–334.8) | 0.007 |
| Week 6 (n=14)b | 440.0 (352.1–526.4) | 209.0 (64.1–355.8) | 258.7 (124.3–284.7) | 0.024 |
| Lactogenesis stage II (hours) | 90 (24–120) | 126 (108–204) | 72 (60–108) | 0.047 |
| Lactating at | ||||
| 3 weeks | 70% (7/10) | 70% (7/10) | 45% (9/20) | 0.343 |
| 6 weeks | 60% (6/10) | 40% (4/10) | 20% (4/20) | 0.080 |
Data are median (interquartile range [25th–75th percentile]) or percentage values as indicated.
a
p values obtained from the Kruskal–Wallis test.
b
Sample size for Week 6: within 1 hour, n=3; >1 and ≤6 hours, n=7; and after 6 hours: n=4.