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.

Q: Abstract: A newborn with paraplegia and evidence of a subarachnoid hemorrhage was found to have a spinal arteriovenous malformation. The arteriovenous malformation was managed by direct surgical obliteration. This patient is the youngest ever reported to have this disorder and the youngest so treated.
Question: Does the abstract contain any numerical data?

A: No
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Q: Abstract: We have developed a new cellulose membrane in which the active hydroxyl and carboxyl groups of the original cellulose fibers are masked with cationic synthetic polymers. The membrane was shown by in vitro and clinical tests to affect the activation of the complement system very little, and it retains the high dialysis efficiency, good tolerance to steam autoclave sterilization, and economical production cost characteristics of the original cellulose membrane. It thus appears that the new cellulose provides the optimum combination of qualities needed in a hemodialysis membrane.
Question: Does the abstract contain any numerical data?

A: No
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Q: Abstract: Previous serial measurements of lymphocyte subpopulations in individuals with multiple sclerosis (MS) have demonstrated periodic reductions in the number of OKT8 positive (T8+) cells. In this longitudinal study, involving twice monthly samples from each participant and carried out in two phases lasting at least six and three months respectively, we have confirmed that fluctuations in T8+ cells occur in patients with MS and also found a significant reduction in this lymphocyte subpopulation in patients' spouses but not their siblings, compared with unrelated controls. The changes observed in spouses were related in time to those occurring in patients on 10/13 occasions from 5/9 families; no temporal relationship occurred in the remainder. Taking two or more low T8+ values as significant, 12/13 patients, 7/9 spouses, 6/13 siblings and 4/13 controls (chi 2 = 12.5; P less than 0.01) were abnormal at some stage. Our results provide indirect evidence for the role of environmental factors in determining certain immunological abnormalities present in patients with MS and illustrate the role of family studies in determining the specificity of these changes to the disease.
Question: Does the abstract contain any numerical data?

A:
Yes
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