Indicate the presence of numerical data in the abstract (whether numerical data plays a key role in medical records), solely using the information from the abstract.
Example: Abstract: Some patients converted from ventricular fibrillation to organized rhythms by defibrillation - trained ambulance technicians(EMT - Ds) will refibrillate before hospital arrival.The authors analyzed 271 cases of ventricular fibrillation managed by EMT - Ds working without paramedic back - up.Of 111 patients initially converted to organized rhythms, 19(17%) refibrillated, 11(58%) of whom were reconverted to perfusing rhythms, including nine of 11(82%) who had spontaneous pulses prior to refibrillation.Among patients initially converted to organized rhythms, hospital admission rates were lower for patients who refibrillated than for patients who did not(53 % versus 76% , P = NS), although discharge rates were virtually identical(37 % and 35 % , respectively).Scene - to - hospital transport times were not predictively associated with either the frequency of refibrillation or patient outcome.Defibrillation - trained EMTs can effectively manage refibrillation with additional shocks and are not at a significant disadvantage when paramedic back - up is not available.
Question: Does the abstract contain any numerical data?
Example solution: Yes
Example explanation: As there are numerical figures and percentages (%), the answer is yes.

Problem: Abstract: The role of the epithelium has been studied in the contractile responses of rat trachea. The different modulations observed are discussed in respect to vagal components of the epithelial layer. Responses of rat trachea to immunologic stimulation are shown to be dependent on the presence of the epithelium, which prolongs the relaxation stage without affecting the contractions. This prolongation is abolished by neonatal capsaicin pretreatment, whereas substance P induces a significantly greater relaxation of serotonin-precontracted intact than deepithelialized trachea. Serotonin concentration-response curves are shifted to the right in intact preparations, which is partly reversed by neonatal capsaicin pretreatment, but a hyporeactivity of the tissue exists. A relaxing factor released by the epithelium is hypothesized, possibly dependent on substance P-ergic innervation. Muscarinic cholinergic innervation slightly modulates the contractions but not the relaxations in antigen-induced responses, independently on the presence of the epithelial layer. 4-Aminopyridine induces epithelium-dependent potentiations of contractions to antigen and to serotonin, which involves acetylcholine at one step of the reaction cascade. Epithelial-dependent contracting and relaxing factors are thus suggested in rat trachea.
Question: Does the abstract contain any numerical data?
Solution: Yes