Calculate 1993 Duke Clinical Score for Significant CAD

Usage

calculate_dcs_1993_sig_cad_ptp(
  age,
  sex,
  chest_pain_type,
  have_mi,
  have_smoking_history,
  have_dyslipidemia,
  have_diabetes,
  have_q_waves,
  have_st_t_changes
)

Arguments

age

Input integer value to indicate the age of the patient.

sex

Input characters (female, male) to indicate the sex of the patient.

• female

• male

chest_pain_type

Input characters (typical, atypical, nonanginal) to indicate the chest pain characteristics of the patient.

• typical stands for the patient having typical chest pain.

• atypical stands for the patient having atypical chest pain.

• nonanginal stands for the patient having nonanginal or non-specific chest pain.

have_mi

Input characters (no, yes) to indicate if the patient has a previous history of Myocardial Infarction (MI).

• no stands for the patient not having a previous history of MI.

• yes stands for the patient a previous history of MI.

have_smoking_history

Input characters (no, yes) to indicate if the patient has a smoking history (current or past smoker).

• no stands for not having a smoking history (non-smoker).

• yes stands for having a smoking history (current or past smoker).

have_dyslipidemia

Input characters (no, yes) to indicate if the patient has dyslipidemia.

• no stands for not having dyslipidemia.

• yes stands for having dyslipidemia.

have_diabetes

Input characters (no, yes) to indicate if the patient has diabetes.

• no stands for not having diabetes.

• yes stands for having diabetes.

have_q_waves

Input characters (no, yes) to indicate if the patient has Q waves on electrocardiogram (ECG).

• no stands for the patient not having Q waves on ECG.

• yes stands for the patient having Q waves on ECG.

have_st_t_changes

Input characters (no, yes) to indicate if the patient has ST-T changes on electrocardiogram (ECG).

• no stands for the patient not having ST-T changes on ECG.

• yes stands for the patient having ST-T changes on ECG.

Value

A numeric value representing the patient's PTP for significant (>75% luminal diameter narrowing of at least one major coronary artery) CAD based on the 1993 Duke Clinical Score.

Details

The predictive model is based on patients referred for cardiac catheterisation between 1969 and 1983.

Examples

# 40 year old female with typical chest pain,
# previous history of MI,
# has diabetes but no dyslipidemia and a non-smoker.
# She has Q waves but no ST-T changes on ECG.

calculate_dcs_1993_sig_cad_ptp(
    age = 40,
    sex = "female",
    chest_pain_type = "typical",
    have_mi = "yes",
    have_smoking_history = "no",
    have_dyslipidemia = "no",
    have_diabetes = "yes",
    have_q_waves = "yes",
    have_st_t_changes = "no"
)
#> [1] 0.8719152