{'fraction_non_alphanumeric': 0.025039123630672927, 'fraction_numerical': 0.004694835680751174, 'mean_word_length': 5.2745098039215685, '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': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Comparison of the helium rebreathing method and the x-ray film densitometry in epidemiological screening tests of CNSLD (author's transl).

Two methods for the examination of the residual volume were compared under the special conditions of epidemiological studies. The X-ray Photo Densitometry RV/TLC is measured as a quotient of the brightness of the lung radiographs during inspiration and expiration maximums. The Helium Rebreathing method is a gas mixture technique. The correlation between both methods proved to be significant (r = 0,60). The advantages and disadvantages of these methods for epidemiological studies were discussed.