Procedure for the proposed QRS detection algorithm.

<p>Procedure for the proposed QRS detection algorithm.</p

The results of the evaluation of the proposed algorithm and others based on the AHA ECG database

<p>The results of the evaluation of the proposed algorithm and others based on the AHA ECG database</p

The evaluation of the proposed algorithm and others under a variety of noisy environments.

<p>The evaluation of the proposed algorithm and others under a variety of noisy environments.</p

Effects of medications on the risk for post-stroke pneumonia.

Effects of medications on the risk for post-stroke pneumonia.</p

Output signal of each processing stage of the proposed algorithm.

<p>(a) Original ECG signal, (b) Band pass filtered ECG signal, (c) Output signal of the squaring, (d) Output signal of the difference block, (e) Output signal and threshold after MAF1 & level stabilization, (f) output signal and threshold of MAF2.</p

Flowchart of included patients.

Flowchart of included patients.</p

Baseline characteristics of included patients.

Baseline characteristics of included patients.</p

Clinical characteristics of patients according to current use of medications at 1-year after index stroke.

Clinical characteristics of patients according to current use of medications at 1-year after index stroke.</p

Examples of incorrect detection from some subjects who have over 20 FPs or FNs.

<p>(a) False positive detection in record 105, (b) False negative detection in record 108, (c) False negative detection in record 203.</p

The original ECG signal and the scaled output of the level stabilizer (the dashed line is the energy level threshold.)

<p>The original ECG signal and the scaled output of the level stabilizer (the dashed line is the energy level threshold.)</p