Impact of multimorbidity and complex multimorbidity on healthcare utilisation in older Australian adults aged 45 years or more: a large population-based cross-sectional data linkage study.

30 Our study showed a trend indicating a greater impact of MM, CMM and disease count on high healthcare utilisation among younger versus older participants.

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After adjusting for covariates, CMM was associated with a 1.83-fold (95% CI 1.79 to 1.86) increased risk of high GP use, and stratified analysis by age group showed a decreasing trend with increased age as for that with MM.

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