Area under the curve

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About

Test calculates the area above and below the curve for a sequential set of readings. Total area is also provided. A fixed baseline can be specified or the first Y value can be used for each dataset.

Requires

Y variables and X variables to be compared. Tests with matching Y and X variables are not allowed. Data for the X variables must be in ascending order.

Feature

Where one value of any data pair is missing, both values are ignored.

Parameters

Area under the curve dialog

Variables

Select one or more Y variables and one or more X variables (See Selecting variables for details). Output will be produced for each pair of Y and X variables, dependant on the block mode selected.

Block Mode

Defines how the Y variables and X variables are compared. (See Performing multiple analyses for details)

Options

Baseline

Value

If Fixed value is used for Baseline this allows you to specify the value to use. The default value is 0.

Graph

Allows you to choose a graph to accompany your output. Available options are:

The default graph can be selected in Preferences

Subtitle

Allows you to specify an optional subtitle which will be included in the statistical output.

Filters

Area under the curve dialog

Allows you to select rows for analysis based upon conditions in other variables (See Filtering datasets for details)

Buttons

?

Opens the help system for this dialog.

Dataset…

Sends the output from this analysis to a new OxonStat Dataset. See Dataset output for more details.

Print…

Sends the output from this analysis to a printer.

Cancel

Cancels the analysis and closes the dialog.

Screen…

Displays the output from this analysis in the Results window.

Sample output

OxonStat20:50, 12 Aug 2023

Compare:Sys_BP and Timeline
Subtitle:<none>
Statistic:Area Under the Curve
Dataset:OxonStat Demo With X
Range:Row 1 [Green] to Row 38 [Hall]
Filter:<no filter>

ParameterValue
Baseline value145.0000
Area above baseline889.8213
Area below baseline5324.8213
Total area6214.6426
Number of points38
First value10.0000
Last value380.0000

Area under the curve plot 100 125 150 175 200 Sys_BP 0 100 200 300 400 Timeline



OxonStat20:50, 12 Aug 2023

Compare:Dia_BP and Timeline
Subtitle:<none>
Statistic:Area Under the Curve
Dataset:OxonStat Demo With X
Range:Row 1 [Green] to Row 38 [Hall]
Filter:<no filter>

ParameterValue
Baseline value88.0000
Area above baseline209.8336
Area below baseline3394.8335
Total area3604.6672
Number of points38
First value10.0000
Last value380.0000

Area under the curve plot 50 60 70 80 90 100 Dia_BP 0 100 200 300 400 Timeline



OxonStat20:50, 12 Aug 2023

Compare:Glucose and Timeline
Subtitle:<none>
Statistic:Area Under the Curve
Dataset:OxonStat Demo With X
Range:Row 1 [Green] to Row 38 [Hall]
Filter:<no filter>

ParameterValue
Baseline value6.0000
Area above baseline99.9678
Area below baseline130.9678
Total area230.9356
Number of points38
First value10.0000
Last value380.0000

Area under the curve plot 3 4 5 6 7 8 Glucose 0 100 200 300 400 Timeline