Incidence density rates were consistent with cumulative incidence, with a rate of 26.5 per 1000 person-years between the ages of 5 and 14 years (Table S3 in the Supplementary Appendix).

We conducted a surreptitious, prospective, cohort study to explore how often physicians nod off during scientific meetings and to examine risk factors for nodding off. After counting the number of ...

This is higher than the incidence rate of TB for the entire U.S.—9,615 new TB cases in 2023, for an incidence rate of 2.9 cases per 100,000 persons. Incidence vs. Prevalence Incidence should not ...

The comparison of incidence density between the two treatment groups were expressed as an incidence density ratio (IDR). The 95% confidence intervals were calculated assuming a Poisson distribution.

Across time, the estimated daily case incidence per 100,000 people in masked counties was 75 percent of case incidence in unmasked counties (95% confidence interval: 67, 83) at four weeks and 65 ...

Population density and structure may impact the length of the influenza season regardless of ... Weekly incidence data were examined from 603 U.S. regions of varying size and with ...

Fig. 1: Incidence density rate (and 95% confidence interval) for hepatitis C virus and HIV over 3 years of the Vancouver Injection Drug User Study. On univariate analysis, HCV seroconversion occurred ...