Among the 96 children in the sample, VAP developed
in 31 (32%), with an incidence of 16.4 episodes
per 1000 days of mechanical ventilation. A strong
agreement existed between the CDC/NHSN criteria
and CPIS for the VAP diagnoses (κ statistic, 0.878;
P < .001). The concordance was present in 91 analyses
(95%; Table 1). Early-onset VAP was identified in 19
of the 31 children (61%) and late-onset VAP in 12
(39%). The mean CPIS scores were 3.8 (SD, 0.70) for
the 68 VAP-free patients and 6.2 (SD, 0.70) for the 31
patients who had VAP