Core Functions to Read and Fit 13c Time Series from Breath Tests

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Documentation for package ‘breathtestcore’ version 0.8.7

• DESCRIPTION file.
• User guides, package vignettes and other documentation.

Help Pages

AIC.breathtestnlmefit	S3 AIC method for breathtestnlmefit
augment.breathtestfit	Augmented prediction for breathtest fit
breathtest_data	Data structure with PDR data and descriptors for breath test records
breathtest_read_function	Snoop method to read breath test file
btcore_file	Path to example breath test data file
cleanup_data	Transforms 13C breath data into a clean format for fitting
coef.breathtestfit	S3 coef and summary for breathtestfit
coef_by_group	Tabulates per-group breath test parameters
coef_diff_by_group	Tabulates breath test parameter differences of groups
cum_exp_beta	Cumulative exponential beta function
dob_to_pdr	Convert breath test DOB data to PDR data
exp_beta	Exponential beta function for 13C breath data
extract_id	Extracts an ID from string IRIS CSV file
nlme_fit	Mixed-model nlme fit to 13C Breath Data
nls_fit	Individual curve fit with nls to 13C breath test data
null_fit	Convert data to class breathtestfit
plot.breathtestfit	S3 plot method for breathtestfit
read_any_breathtest	Read breathtest files of any format
read_breathid	Read BreathID file
read_breathid_xml	Read new BreathID/Examens XML file
read_breathtest_excel	Reads breathtest data in Excel format
read_iris	Read 13C data from IRIS/Wagner Analysen
read_iris_csv	Read 13C data from IRIS/Wagner Analysen in CSV Format
sigma.breathtestnlmefit	S3 method to extract the fit's residual standard deviation
simulate_breathtest_data	Simulate 13C breath time series data
subsample_data	Decimate densely sampled 13C time series
t50_bluck_coward	Bluck-Coward self-corrected half-emptying time
t50_maes_ghoos	Half-emptying time by Maes/Ghoos method
t50_maes_ghoos_scintigraphy	Half-emptying time t50 from Maes/Ghoos fit with scintigraphic correction
tidy.breathtestfit	Broom-style tidying methods for breathtestfit
tlag_bluck_coward	Lag phase for Bluck-Coward self-correcting fit
tlag_maes_ghoos	So-called lag time from Maes/Ghoos fit
usz_13c	Zurich sample set of 13C breath test data
usz_13c_a	Exotic 13C breath test data
usz_13c_d	13C breath test data with MRI emptying for comparison