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The rise in one-person households is a worldwide trend. This means that informal care is less available, particularly for elderly people, with important implications for health-care utilisation and health expenditure. This paper uses a two-part model to examine the relationship between living alone and hospitalisations in Australia in terms of both the likelihood and the length of hospitalisation. The results show living alone increases the probability of hospitalisation by 2.9 percentage points and length of stay by 3.8 days for people aged 45 and above. Further analysis indicates that these impacts depend on the length of living alone. Additionally, the probability and the length of hospitalisation vary depending on whether the cause of living alone is separation/divorce, widowhood or never having married.
