ACS {DTDA}

Acute Coronary Syndrome data

Description

The data include information of 939 patients with confirmed diagnosis of type 1 (primary spontaneous) acute coronary syndrome (ACS). Patientes were consecutively admitted to the Cardiology Department of two tertiary hospitals in Portugal between August 2013 and December 2014. The age at diagnosis is doubly truncated because of the interval sampling.

Usage

data(ACS)

Format

A data frame with 939 observations on the following 5 variables.

X

a numeric vector, age at diagnosis (in years).

U

a numeric vector, the elapsed time (in years) between birth and the beggining of the study (August 2013).

V

a numeric vector, the elapsed time (in years) between birth and end of the study (December 2014).

Sex

a numeric vector, sex of the participants (0 = female, 1 = male).

diagnosis

a numeric vector, type of diagnosis at discharge 1 - STEMI (ST elevation myocardial infarction) and 2 - NSTEACS (all others diagnoses).

Details

The age at diagnosis X is doubly truncated due to the interval sampling. The length of the sampling interval (V-U) is 1.42 years. The NPMLE of the cumulative distribution function of X does not exist or is not unique for this dataset. The necessary and sufficient graphical condition presented by Xiao and Hudgens (2020) to determine the existence and uniqueness of the NPMLE is not satisfied.

References

Araújo C, Laszczyska O, Viana M, Melão F, Henriques A, Borges A, Severo M, Maciel MJ, Moreira I, Azevedo A (2018) Sex differences in presenting symptoms of acute coronary syndrome: the EPIHeart cohort study. BMJ Open 8.

Xiao J and Hudgens MG (2020) On nonparametric maximum likelihood estimation with double truncation. Biometrika 106, 989-996.

See Also

ACSred

Examples

data(ACS)
str(ACS)