Geographical variation in radiological services: a nationwide survey

Area of Science:

• Radiology and Medical Imaging
• Health Services Research
• Public Health Policy

Background:

• Geographical disparities in healthcare services question equitable resource distribution.
• Significant variation exists in the utilization of X-ray, CT, MRI, and Ultrasound examinations across Norwegian counties.
• Factors influencing this variation, including institutional contributions and socioeconomic determinants, require investigation.

Purpose of the Study:

• To analyze geographical variations in radiological examination rates (X-ray, CT, MRI, Ultrasound) in Norway.
• To assess the roles of public and private institutions in these variations.
• To determine the impact of accessibility and socioeconomic factors on examination rate disparities.

Main Methods:

• A nationwide survey of all radiological institutions in 2002 was conducted.
• Examination rates per 1000 inhabitants were compared across Norwegian counties.
• Data were collected using a coded system from institutional records.

Main Results:

• Overall radiological examination rates varied by a factor of 2.4 across counties.
• CT and MRI utilization showed significant variation, with rates differing by over twofold.
• Private institutions contributed 28% of examinations, often performing highly variable single procedures. Accessibility and socioeconomic factors positively correlated with examination rate variations.

Conclusions:

• Substantial geographical variation in CT and MRI use exists in Norway, challenging healthcare equity.
• Accessibility differences, the interplay of public and private providers, and socioeconomic factors likely contribute to these disparities.
• Findings suggest potential for optimizing healthcare resource allocation to promote more equitable access to radiological services.