This cohort study concerns the effect of skin cancer screening (SCS) on medical treatment intensity in patients with skin cancer.
Routine data from persons aged 35 to 99 who were insured by the AOK health insurance company were used to identify persons who received a diagnosis of malignant melanoma or a non-melanocytic skin cancer in 2014 or 2015, either through skin cancer screening or without screening. These persons were included in cohort studies. The routine data contained no information on tumor stages or grading. Tumor-associated rates of hospital admission, contact with physicians in outpatient practice, and intensity of surgical treatment were determined; rate ratios (RR) and their 95% confidence intervals (CI) were estimated.
The cohort studies included 13 633 patients with melanoma (6480 with SCS and 7153 without) and 118 168 patients with non-melanocytic skin cancer (43 308 with screening and 74 860 without). Patients whose melanomas had been detected by screening hat a lower medical treatment intensity than unscreened patients (intensity of tumor-associated surgical treatment (RR = 0.79, 95% CI [0.74; 0.85]), hospital contact rate (RR = 0.44, 95% CI: [0.38; 0.50]), contact with physicians in outpatient practice (RR = 0.79, 95% CI: [0.73; 0.85]). Among patients with non-melanocytic skin cancer, the screened patients displayed a lower hospital contact rate (RR = 0.52, 95% CI: [0.49; 0.56]), a higher contact rate in the outpatient sector (RR = 1.11, 95% CI: [1.08; 1.13]), and no difference in surgical treatment intensity (RR = 0.98, 95% CI: [0.96; 1.00]).
SCS is associated with lower medical treatment intensity in the first 12 months after diagnosis in patients with melanoma. Among patients with non-melanocytic skin cancer, those who had been screened had lower hospital contact rates, but there was no observed lowering of other rates reflecting treatment intensity.
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