{'fraction_non_alphanumeric': 0.024242424242424242, 'fraction_numerical': 0.012121212121212121, 'mean_word_length': 5.031963470319635, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 1, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Section on Neuroepidemiology

Improved medical treatment of patients with completed strokes is unlikely to dramatically change the outcome. Only by prevention can stroke be conquered. Factors contributing to the occurrence of atherothrombotic brain infarction (ABI), the most common type of stroke, have been identified in a prospective epidemiologic study of 5,209 men and women (ages, 30 to 62) followed for 18 years for the development of stroke: 196 strokes occurred; 11 1 were ABIs. Risk of stroke increases in proportion to blood pressure, systolic or diastolic, in both sexes, at all ages. Even moderate elevations of pressure are important. At any blood pressure level the presence of ECG-LVH, hypercholesterolemia, diabetes, and cigarette smoking increases the risk of ABI fivefold. Risk of ABI can be accurately predicted in either sex on the basis of a multivariate analysis of these five factors. One-tenth of the asymptomatic population in which one-half of the strokes will occur can be identified. Risk of stroke can be assessed over a fortyfold range. Those in greatest jeopardy of stroke can be identified before the clinical catastrophe. It is in these stroke candidates that intervention is indicated, particularly vigorous and sustained control of hypertension. This is the key to stroke prophylaxis.