Douglas, E. and Bell, D. 2019. The relationship between loneliness, social isolation and health service usage in an older population: an example of administrative data linkage using Healthy Ageing In Scotland (HAGIS) and NHS records. International Journal of Population Data Science. 4, 3 (Nov. 2019). DOI:https://doi.org/10.23889/ijpds.v4i3.1283.