Core Functions to Read and Fit 13c Time Series from Breath Tests
S3 AIC method for breathtestnlmefit
Augmented prediction for breathtest fit
Data structure with PDR data and descriptors for breath test records
Snoop method to read breath test file
Path to example breath test data file
Transforms 13C breath data into a clean format for fitting
Tabulates per-group breath test parameters
Tabulates breath test parameter differences of groups
S3 coef and summary for breathtestfit
Cumulative exponential beta function
Convert breath test DOB data to PDR data
Exponential beta function for 13C breath data
Extracts an ID from string IRIS CSV file
Mixed-model nlme fit to 13C Breath Data
Individual curve fit with nls to 13C breath test data
Convert data to class breathtestfit
S3 plot method for breathtestfit
Read breathtest files of any format
Read new BreathID/Examens XML file
Read BreathID file
Reads breathtest data in Excel format
Read 13C data from IRIS/Wagner Analysen in CSV Format
Read 13C data from IRIS/Wagner Analysen
S3 method to extract the fit's residual standard deviation
Simulate 13C breath time series data
Decimate densely sampled 13C time series
Bluck-Coward self-corrected half-emptying time
Half-emptying time t50 from Maes/Ghoos fit with scintigraphic correcti...
Half-emptying time by Maes/Ghoos method
Broom-style tidying methods for breathtestfit
Lag phase for Bluck-Coward self-correcting fit
So-called lag time from Maes/Ghoos fit
Reads several formats of 13C data (IRIS/Wagner, BreathID) and CSV. Creates artificial sample data for testing. Fits Maes/Ghoos, Bluck-Coward self-correcting formula using 'nls', 'nlme'. Methods to fit breath test curves with Bayesian Stan methods are refactored to package 'breathteststan'. For a Shiny GUI, see package 'dmenne/breathtestshiny' on github.
Useful links