Figure 4

Percentage of malignancy-specific search volumes per 100,000 inhabitants for each search category. Keywords were classified deductively and inductively into 15 categories: diagnosis (a diagnosis-indicating disease specification; e.g., “stage IV breast cancer”), symptoms (e.g., “weight loss colon cancer”), treatment (e.g., “skin cancer treatment”), prognosis (e.g., “glioblastoma life expectancy”), risk factors/triggers (e.g., “lung cancer smoking”), demographics (e.g., “lung cancer women”), comorbidity (e.g., “Crohn’s disease colon cancer”), consequences (e.g., “impotence after prostate cancer”), prevention (e.g., “hpv pap smear cervical cancer”), costs (e.g., “surgery costs colon cancer”), celebrities (e.g., “Kylie Minogue breast cancer”), general information(e.g., “melanoma”), media (e.g., “brain tumor documentary”), peer-community (e.g., “lung cancer experience reports”), and others (e.g., “prostate cancer cycling”). Colors are only interpretable within one cancer entity. Percentages may not sum up to 100 due to rounding.