To estimate the additional health care system costs associated with giant cell arteritis (GCA) in the year pre-diagnosis, post diagnosis, and over long-term follow up compared to individuals with similar demographics and comorbidities without GCA.

中文翻译：

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加拿大安大略省与巨细胞动脉炎相关的阶段特定医疗费用。

与具有相似人口统计数据和没有巨细胞动脉炎 (GCA) 合并症的个体相比，估计在诊断前、诊断后和长期随访期间与巨细胞动脉炎 (GCA) 相关的额外医疗保健系统成本。