Читать книгу The Statistical Analysis of Doubly Truncated Data - Prof Jacobo de Uña-Álvarez, Prof Carla Moreira - Страница 23

We also consider data on the age at diagnosis of acute coronary syndrome (ACS). In Portugal, with a population of 10.3 million inhabitants, there are 38 public hospitals with resources for structured care of patients with ACS, out of which 16 have catheterization laboratory facilities. Public hospitals provide treatment for the majority of the acute coronary events and the number of patients submitted to primary percutaneous coronary intervention increased by 37.0% from 2009 to 2013, although at the regional level access to this procedure varied. The EPIHeart study (Araújo et al., 2018) is a study assembled between August 2013 and December 2014 by the Cardiology Department of two tertiary hospitals in two regions in Northern Portugal: Hospital de São João, Porto, covering the metropolitan area of Porto in the coast; and Hospital de São Pedro, Vila Real, covering the interior, northeastern region. The inclusion criteria to the cohort were admission with confirmed diagnosis of type 1 (primary spontaneous) ACS, aged 18 years or older, and living in the catchment area of the referred hospitals (Porto, Vila Real, Bragança or Viseu). Data were collected through structured interviews within the first 48 hours after admission. Of the 1297 patients initially considered, 939 were included in the cohort due the inclusion criteria (Moreira et al., 2021b). Some descriptive statistics can be found in Table 1.6.

Table 1.6 Descriptive statistics for the ACS Data. Sample size and mean (and standard deviation, SD) for the age at diagnosis (years). STEMI: ST‐segment elevation myocardial infarction; NSTEMI: non‐ST‐segment elevation myocardial infarction.

			Mean (SD)
Sex	Men	697	62.86 (12.63)
	Women	242	69.83 (12.59)
Diagnosis	STEMI	359	61.47 (12.82)
	NSTEMI	580	66.61 (12.69)

The age at diagnosis , ranging from 29.42 to 94.09 years old, was doubly truncated by (), where stands for the elapsed time (in years) between birth and end of the study (December 2014), and .

The ACS Data are used in Chapters 2 and 3. This dataset can be obtained from ACS (complete dataset) or ACSred (reduced dataset) in the DTDA package.