TABLE 4

Percent positivity rates, analyzed by bottle type and volume compliance statusa

Bottle typeCompliantNoncompliant, ≤10-ml volNoncompliant, >10-ml vol
No. of bottle pairs% positives% significant positives% contaminatedNo. of bottle pairs% positives% significant positives% contaminatedNo. of bottle pairs% positives% significant positives% contaminated
SA7547.35.61.62677.54.53.02765.84.71.1
SN8265.04.20.62354.33.01.31953.13.10.0
FA Plus1,0538.97.01.63887.75.91.826114.2b11.9b2.3
FN Plus9067.45.71.72759.58.01.527310.39.2c1.1
All3,5397.35.71.41,1657.45.51.91,0058.77.51.2
  • a Positive culture results imply that at least one bottle from a bottle pair gave a positive result and a positive subculture was obtained. Data for 5 indeterminate positives, all in volume-compliant bottle sets, 1 each in SA and SN and 3 in FA Plus, were excluded from this table.

  • b Data were statistically significant by Pearson's chi-square test; P = 0.011 (all positives) and P = 0.010 (significant positives).

  • c Data were statistically significant; P = 0.045.