“…Moderate 22%-49% 14,15,20 21%-66% 9, 10, 13-15, 17, 18, 20 29%-68% 10,[12][13][14][15][16][17]19,20 Severe 17%-47% 8,11,14,15,20 1%-56% 7,8,11,14,15,18,20 10% to 49% 8, 10-12, 14-16, 20 Variability in definitions Moderate Mild to moderate 15 Tender and congested, 9 Moderate or severe, 13 mild to firm, 10,17,18 mild to moderate, 15 tender or tender moderate, 15 or to palpation, 17 painful lactation 19 moderate or severe 13 Severe Hard, painful, reddened 7 or rock hard 18 *Includes studies of women who were instructed to use a brassiere or binder to suppress lactation 7, 14-20 ; of these, 4 studies included women who were also instructed to use ice packs [14][15][16]18 and 7 included women who were also advised to use analgesics for pain. 7,[14][15][16][18][19]…”