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Table 3 Milk samples collected in women with and without symptoms of mastitis in which S. aureus was isolated (total number of women = 346)

From: Determinants of mastitis in women in the CASTLE study: a cohort study

S. aureus-positive milk samplesa n % (95 % CI)
Women with mastitis (n = 27)b 16 59.3 (39, 78)
Women without mastitis:   
 Week 1 (n = 657) 207 31.5 (28, 35)
 Week 2 (n = 660) 172 26.1 (23, 29)
 Week 3 (n = 648) 117 18.1 (15, 21)
 Week 4 (n = 642) 94 14.6 (12, 17)
  1. aSamples were collected separately for each breast
  2. bMilk collected from women who reported mastitis at the time of collection or the day before milk collection