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The time-matched extraction wizard function has been added to NOTOCORD-hem™ in March 2009 and is available with version 4.2.0.230 onwards.

Time-matched extraction wizard

Overview

The time-matched extraction wizard allows the extraction of data related to a range of reference time points. Time is always the reference and the data can be of the following types: values, durations and counts.

There are two possible extraction modes:

Exact matching

The software retrieves the data at the exact time defined by the reference time point.

Application example: Beat to beat analysis
Eg: The range of reference time points is defined by the R peaks and the selected data is QT duration. The extraction wizard retrieves the QT interval value related to each R peak. If there is a detection issue (eg: no T-end detected), then cell data for the QT interval shows N/A.

Time matching window

The software retrieves the data in a time window specified by the user (in second, before and after the reference time point). There are 4 options for result display:

  • First value: provides the first value in the specified time window.
  • Last value: provides the last value in the specified time window.
  • Closest value: provides the closest value to the reference time given.
  • Mean of value: provides the mean of all value available in the specified time window.

Exact matching mode

The wizard function uses the same principle as the standard extraction. 

  1. Extract your range of reference time points.
  2. Select the file and data you want to extract.
  3. To define the reference time points: select in the Excel® table the time range for which related data will be extracted (ensure the whole range is selected).
  4. Choose the output type (value, duration or count).

Exact matching mode

Time-matching window mode

  1. Unselect the Exact matching option, and fill in the Parameters of time-matching window.
  2. Define the search window by giving the duration before and after the reference time.
  3. Select the computation method (First value by default).

Time-matching window mode

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