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.

[EX Q]: Abstract: Hematoporphyrin derivative, a photosensitive material used to identify and treat neoplastic tissue in humans, has been found to localize in atheromatous plaques in animals and has recently been found in postmortem human atherosclerotic plaques. It is not known whether human plaques take up hematoporphyrin derivative in vivo. In five patients undergoing surgical vascular procedures, specimens containing atheromatous plaques were removed and immediately incubated in autologous oxygenated blood at 37 degrees C with hematoporphyrin derivative at a clinically relevant concentration for 2 hours. On exposure to ultraviolet light, porphyrin fluorescence was noted throughout each plaque, whereas adjacent plaque-free tissue showed no fluorescence. To compare in vitro with in vivo hematoporphyrin derivative uptake by plaques, the fluorescence of three types of arterial lesions (induced by a high cholesterol diet, catheters or balloon injury) was studied in 16 New Zealand White rabbits. Each lesion fluoresced selectively with the same intensity whether hematoporphyrin derivative exposure was performed in vitro or in vivo. Fluorescence microscopy did not show a difference in the pattern of hematoporphyrin derivative fluorescence between in vitro and in vivo specimens. The results suggest that human atheromatous plaques should take up hematoporphyrin derivative in vivo and are, therefore, potentially suitable for photochemical treatment as a new therapeutic approach to atherosclerosis.
Question: Does the abstract contain any numerical data?
[EX A]: Yes

[EX Q]: Abstract: The purpose of the study reported here was to provide descriptive information about dean's letters, which are comprehensive summary letters sent near the end of students' undergraduate medical training by medical school deans to be part of the students' residency applications. Deans of student affairs at 124 U.S. medical schools were surveyed regarding composition of these letters at their institution. They were asked to describe themselves and the letters they write. Responses were received from 87 percent of these schools and provided data on types of information included in the letters, the decision to edit evaluations, student participation in the letter-writing process, use of final summary statements, cost and length of letters, and attitudes toward the development of national letter-writing guidelines. Major findings of the survey show that 97 percent of the writers allocated more space for clinical evaluations than basic science evaluations. Less than 50 percent of the writers included the student's class rank. Almost all included narrative evaluations of the student's performance during the clinical years. Negative information on students was addressed inconsistently by the writers. Eighty-five percent of the writers categorized their students in final summary statements, but many of these failed to provide descriptions of the categories used or explanatory data. The present authors make recommendations for writing more credible and useful letters.
Question: Does the abstract contain any numerical data?
[EX A]: Yes

[EX Q]: Abstract: The metabolism of catecholamines (CA) in non-selected patients with chronic renal failure and under hemodialysis (CRFh) was studied by measuring the concentration of plasma free, sulfo- and glucuroconjugated CA, dopamine (DA), norepinephrine (NE), and epinephrine (EPI). Our data demonstrate a statistically significant increase of free DA and free NE concentration in CRFh, while that of free EPI was not different from controls. However a careful scrutiny of 35 individual data suggests that sub-groups of patients with either high normal or low plasma-free NE concentration could exist; this likely heterogeneity could be a good explanation for conflicting conclusions provided by previous reports. Suspecting that conjugated CA might be altered in CRFh, plasma sulfo- and glucuro-conjugated DA, NE and EPI were also measured. We have found a predictable and highly significant increase of sulfo-conjugated CA; plasma concentration of glucuro-conjugated DA and NE in CRFh was not different from controls, while that of glucuro-conjugated EPI was significantly increased. The physiological meaning, if any, of these new observations on conjugated CA cannot be assessed at the moment. The effects of hemodialysis were also investigated. Measurements on the arterial and on the venous line showed highly significant differences for tyrosine, free and sulfo-conjugated CA, and a lack of difference for glucuro-conjugated CA. Thus tyrosine, free and sulfo-conjugated CA were eliminated by the artificial kidney, but not glucuro-conjugated amines.(ABSTRACT TRUNCATED AT 250 WORDS)
Question: Does the abstract contain any numerical data?
[EX A]:
Yes