Clinical InvestigationSocial Network as a Predictor of Hospital Readmission and Mortality Among Older Patients With Heart Failure
Section snippets
Study Design and Subjects
A prospective study was conducted on 433 patients admitted for HF-related emergencies at 4 Spanish hospitals. The study included patients of both sexes age 65 years and older, with diagnosis (principal or secondary) of suspected HF. Suspected diagnosis was made in cases where patients simultaneously presented with the following symptoms and signs:9 complaint of shortness of breath or fatigue; and alveolar edema, interstitial edema, or signs of pulmonary vascular redistribution on emergency
Study Sample
Of the 433 patients enrolled, information on 1 or more of the baseline variables was lacking in 23 subjects. In addition, 39 (9%) subjects were lost to follow-up of hospital readmission and 24 (5.5%) to follow-up of mortality. Consequently, final analyses were performed on 371 (85.7%) patients for whom there was complete information. The characteristics of the study subjects are presented in Table 1.
Median follow-up of patients was 6.4 months for hospital readmission and 6.6 months for death.
Discussion
Our results show that the greater the degree of social isolation, the higher the frequency of hospital readmission in patients with HF. The influence of a low social network on hospital readmission is comparable to that exerted by other important biomedical factors, and is not explained by a good number of biomedical and psychosocial variables. However, no relationship was observed between social network and mortality in HF patients.
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Supported by FIS grant 00/0035, by an unrestricted educational contract with Lilly Pharmaceuticals, Spain, and by ISCIII (network C03/09 and network G03/065). The sponsors had no role in study concept and design, subject recruitment, acquisition of data, data analysis, writing of the manuscript, or in the decision to submit the article for publication.