News and Press Releases Search About the CF Foundation Research Public Policy Advocacy Drug Pipeline CFTR Modulators Our Research Approach Get Involved Clinical Trials Health Care Reform North American CF Conference Fundraising Care Centers Our Advocacy Work Antibiotics Patient Assistance Insurance Cystic Fibrosis Foundation Therapeutics (CFFT) Patient Registry Infection Prevention and Control Lung Transplantation Diversity, Equity, and Inclusion In the Spotlight Medications Coronavirus (COVID-19) Infections Intro to CF Clinician Resources Great Strides In Memoriam Adult Care Care Team CF Related Health Conditions Diagnosis Fertility and Reproductive Health Fitness Germs Nutrition Researcher Resources (-) CF-Related Complications 2008 (-) News About the CF Foundation | CF-Related Complications Cough Frequency May Serve as Measure in Evaluating CF Treatments May. 21, 2008 | 2 min read