@article{202409.2278, doi = {10.20944/preprints202409.2278.v1}, url = {https://doi.org/10.20944/preprints202409.2278.v1}, year = 2024, month = {September}, publisher = {Preprints}, author = {Stanley Sciortino and Steve Graham and Tracey Bishop and Jamie Matteson and Sarah Carter and Cindy H. Wu and Rajesh Sharma}, title = {CF Screening Efficacy and Seasonal Variation in California: 15-Year Comparison of IRT Cutoffs Versus Daily Percentile for First-Tier Testing}, journal = {Preprints} }