Table 2 Degree of fullness, applied vacuums, milk volume and PAMR with and without nipple shield

Degree of fullness

 All data

0.76 (0.42)

0.73 (0.50)

0.863

 Subset

0.81 (0.25)

0.73 (0.23)

0.375

Applied vacuum (mmHg)

 All data

-235 (60)^a

-186 (73)

0.019

 Subset

-218 (66)^a

-220 (59)

0.770

Volume (mL)

 All data

76.5 (63.1)

32.1 (58.4)

0.002

 Subset

83.8 (56.7)

35.2 (81.6)

0.111

PAMR (%)

 All data

69 (33)^a

40.7 (40)^a

0.002

 Subset

72 (19)^a

40.0 (49)^a

0.045