Study aims
| Van den Akker et al, 200117 | Van den Akker et al, 200618 | Schellevis et al, 199419 | Bayliss et al, 200420 | Perkins et al, 200421 | Parkerson et al, 199522 | |
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| Main study focus | Risk factors for developing multimorbidity | Risk factors for developing multimorbidity | Healthcare utilisation and impact of multimorbidity on individual (patient) outcomes | Impact of multimorbidity on individual (patient) outcomes | Healthcare utilisation and costs and impact of multimorbidity on individual (patient) | Healthcare utilisation and costs and impact of multimorbidity on individual (patient) outcomes |
| Study aims | To profile patients' vulnerability to multimorbidity in terms of the influence of coping style, life events, health locus of control, long-term difficulties, type of living arrangement, and social networks | To explore multimorbidity and its relation with psychosocial characteristics by categorising and comparing multimorbid diseases that have a common pathophysiological origin and those that do not | To examine consultation rates and incidence of ‘intercurrent’ morbidity (new illnesses including acute ones) in generalpractice in in cohorts of patients with five common chronic diseases | To assess the effect of certain comorbid conditions on physical wellbeing over time in a population of persons with chronic medical conditions; to compare these effects to that of hypertension alone | To compare the predictive validity of five commonly-used measures of multimorbidity among a large cohort of older adults who are vulnerable and cared for in a single primary care practice | To address the need for a primary care case-mix model to estimate the probability of follow-up severity of illness, utilisation of services, and cost of health care |