1. Reference values | 2. Hemoglobin correction | 3. Clinical sub-pattern (Hughes & Pride 2012) | 4. How VA shapes the classifier output | 5. Cohort-level diffusion summaries | See also
Package: pft 1.0.1
Pat Johnson
pft: Pulmonary Function Test Interpretation per ERS/ATS 2022
Computes predicted values and lower/upper limits of normal for pulmonary function tests according to American Thoracic Society ('ATS') and European Respiratory Society ('ERS') reference standards. Supports spirometry (Global Lung Function Initiative 'GLI' 2012, Quanjer et al. (2012) <doi:10.1183/09031936.00080312>; and the race-neutral 'GLI' 2022 / 'GLI Global' equations, Bowerman et al. (2023) <doi:10.1164/rccm.202205-0963OC>), static lung volumes ('GLI' 2021, Hall et al. (2021) <doi:10.1183/13993003.00289-2020>), and the carbon monoxide transfer factor / diffusion capacity ('GLI' 2017, Stanojevic et al. (2017) <doi:10.1183/13993003.00010-2017>, including the 2020 author correction <doi:10.1183/13993003.50010-2017>). Also assigns interpretive pattern labels (Normal, Non-specific, Obstructed, Restricted, Mixed) from spirometry and lung-volume measurements following the 'ERS'/'ATS' 2022 interpretation algorithm, Stanojevic et al. (2022) <doi:10.1183/13993003.01499-2021>.
Authors:
pft_1.0.1.tar.gz
pft_1.0.1.tar.gz(r-4.7-any)pft_1.0.1.tar.gz(r-4.6-any)
pft_1.0.1.tgz(r-4.6-emscripten)
manual.pdf |manual.html✨
DESCRIPTION |NEWS
card.svg |card.png
pft/json (API)
| # Install 'pft' in R: |
| install.packages('pft', repos = c('https://cran.r-universe.dev', 'https://cloud.r-project.org')) |
Bug tracker:https://github.com/overdodactyl/pft/issues
Datasets:
- pft_example - Synthetic example PFT cohort
Last updated from:d172ea94a7. Checks:4 OK. Indexed: yes.
| Target | Result | Time | Files | Syslog |
|---|---|---|---|---|
| linux-devel-x86_64 | OK | 191 | ||
| source / vignettes | OK | 235 | ||
| linux-release-x86_64 | OK | 133 | ||
| wasm-release | OK | 114 |
Exports:as_tibblepft_bdrpft_bdr_2005pft_changepft_classifypft_diffusionpft_diffusion_interpretpft_dlco_hb_correctpft_fev1qpft_goldpft_interpretpft_longpft_plotpft_prismpft_qualitypft_severitypft_severity_2005pft_spirometrypft_volume_subpatternpft_volumes
Dependencies:cligluelifecyclemagrittrpillarpkgconfigrlangtibbleutf8vctrs
Diffusion capacity (DLCO / TLCO): reference, Hb correction, interpretation
Last update: 2026-07-11
Started: 2026-07-11
Getting started with pft
1. Reference values from demographics alone | 2. Z-scores and percent predicted from measured values | 3. Severity grading | 4. ATS pattern classification | 5. Bronchodilator response | 6. PRISm screening | 7. Serial change | 8. The one-call workflow | 9. Visualisation | 10. Cohort analyses | 11. Long-form tidier for downstream analysis | 12. Diffusion clinical category | Citations
Last update: 2026-07-11
Started: 2026-07-11
Glossary
Measure abbreviations | Statistical terms | Patterns and clinical entities | Tests and gradings | Notation: the 4-character pattern combination | Race / ancestry categories (GLI 2012 only) | Common validation errors
Last update: 2026-07-11
Started: 2026-07-11
Input data format
Required vs. optional columns | Units and types | Using non-canonical column names | Common errors
Last update: 2026-07-11
Started: 2026-07-11
Interpretation reference: severity bands, patterns, and standards
Severity bands | Pattern decision tree | When to use 2022 vs 2005 | Worked examples | Example 1: low FEV1/FVC with low FEV1 | Example 2: low TLC with preserved KCO | Example 3: PRISm without TLC | Applying vector helpers inside a data-frame workflow | See also
Last update: 2026-07-11
Started: 2026-07-11
Longitudinal PFT analysis: change and FEV1Q
1. Two-point conditional change score: pft_change() | 2. FEV1Q in adults: pft_fev1q() | 3. Plotting trajectories | See also
Last update: 2026-07-11
Started: 2026-07-11
