{'fraction_non_alphanumeric': 0.04843918191603875, 'fraction_numerical': 0.05489773950484392, 'mean_word_length': 3.869109947643979, '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}}
Dementia in advanced age led to higher mortality rates and shortened life

Main results After 5 years, 70% of patients with dementia had died compared with 35% of those without dementia. After controlling for sociodemographic variables and comorbidity, 14% of all deaths could be attributed to dementia with a risk of death among patients with dementia twice as high as that for non-demented people. The mean survival time was 3.0 years (CI 2.7 to 3.4) for patients with dementia and 4.2 years (CI 4.1 to 4.3) for those without dementia. The specific mortality rate for all dementias was 2.4 per 100 person years (95% CI 1.9 to 3.0) and 1.9 per 100 person years (CI 1.5 to 2.4) for those with AD. The relative risk of death was 2.0 (CI 1.5 to 2.7) for AD and 3.3 (CI 2.0 to 5.3) for vascular dementia. Age and sex specific mortality rates, relative risk of death, and population attributable risk of death are shown in the table.