Using the one hit method provided 33,498 incident cases (incidence proportion 1.08) over a clearance period of ten years.
Applying the NDSS method and a ten-year clearance period, 38,342 incident cases of diabetes (incidence proportion 1.24) were found.
The term attack rate is sometimes used interchangeably with the term incidence proportion.
Because incidence rate includes persons entering and leaving study populations, whereas incidence proportion assumes that those individuals were disease-free, it generally is more accurate than incidence proportion for long-term studies.
Hence, an accurate measure of incidence, whether incidence proportion or incidence rate, requires a precise definition of the denominator.
Cumulative incidence, also called incidence proportion, in epidemiology, estimate of the risk that an individual will experience an event or develop a disease during a specified period of time.
To determine prevalence, incidence proportion, and changes of urinary incontinence (UI) 10 13 years after hysterectomy compared to two control groups.
Because complete follow-up is required to directly compute incidence proportion, it is usually only calculated for studies with a short follow-up period.
To accurately measure incidence proportion, all individuals at risk for the outcome under study must be followed during the entire study period (or until experiencing the outcome).
The 1-year incidence proportion was 2.8%.
The male incidence proportion was 2.9% and the female incidence proportion was 2.5%.
