Table 3.

Comparison of mothers with hospital-grade breast pump in this study vs. mothers with hand expression in the literature.

	This study (hospital-grade breast pump, g, n = 30)	The literature (hand expression, mL, n = 12)	Z	P-value
Cumulative milk output after
D1	0.0 (0.0, 0.0)	0.1 (0.0, 2.6)	0	<0.001
D2	0.0 (0.0, 0.6)	0.25 (0, 11)	201.0	0.493
D3	28.8 (3.0, 82.9)	15 (0.3, 41)	355.0	0.012
D4	173.3 (94.6, 360.5)	119 (6, 167)	371.0	0.004
D5	428.8 (269.7, 828.5)	216 (28, 267)	416.0	<0.001
D6	820.0 (482.3, 1308.8)	359 (59, 594)	440.0	<0.001
D7	1139.3 (827.1, 1289.3)	456 (104, 866)	456.0	<0.001
D14	5802.6 (3630.5, 8406.7)	2,387 (1,196, 3,952)	453.0	<0.001
Cumulative milk output between
D8-14	4560.8 (2866.4, 6646.7)	1,789 (957, 3,320)	453.0	<0.001