TABLE 2

Characteristics of menstrual cups and their effects on S. aureus growth and TSST-1 productiona

ProductCompositionDiam/ht (cm)S. aureusTSST-1
Mean bacterial count (CFU/ml) ± SDP valueMean concn (ng/ml) ± SDP value
Medium alone (positive control)2.5 × 109 ± 0.2 × 10973.9 ± 8.5
Cups
    be'Cup
        Size 1Silicone4/4.51.1 × 109 ± 0.3 × 1090.00150.6 ± 8.50.03
        Size 2Silicone4.5/54.4 × 109 ± 1.1 × 1090.00187.3 ± 4.10.001
    Me Luna
        Size STPE3.8/4.55.7 × 108 ± 4 × 108<0.00187.3 ± 4.10.043
        Size MTPE4.5/57.6 × 108 ± 2 × 1080.001108.7 ± 23.20.03
  • a TPE, thermoplastic elastomers. Values are means ± standard deviations (n = 3 to 8). Student's t tests were used to compare bacterial CFU and TSST-1 concentrations in the presence of cups to the values for the control.