You are presented with a paragraph from a COVID-19 literature. Classify the topics of this piece of text by choosing from the following categories:

- Epidemic Forecasting: The content relates to predictions about the spread of COVID-19.
- Treatment: The paragraph discusses therapeutic methods or medication for COVID-19.
- Prevention: The content covers measures to prevent the spread of COVID-19.
- Mechanism: The paragraph explains the biological mechanisms of the virus.
- Case Report: The content is a report of a COVID-19 case.
- Transmission: The paragraph discusses how COVID-19 is transmitted.
- Diagnosis: The content is about diagnosing COVID-19 in individuals.

Your classification should be provided as an element within a JSON array. The array should be formatted with topics enclosed in double quotes and separated by commas, following the JSON format, for example: ["Topic1", "Topic2", ...]. Include all applicable topics within the array. Your output should be a valid JSON array, and no additional text should be included in your response.

Article:

High-risk patients over the age of 65, who had chronic medical conditions, and had not yet had a primary care visit within 2020 were identified. A subgroup of patients participated in a survey to assess social determinants of health (SDOH) in the setting of a pandemic. Outcomes of those who participated in the survey, and those who did not participate were compared. Notably, those who were surveyed and lived within zip codes with low socioeconomic status had significantly decreased emergency department visits, which we defined as a discharge from the emergency department without hospitalization, as compared to those who did not receive outreach. Rates of inpatient hospitalization did not differ significantly. These findings suggest that patient outreach to evaluate SDOH during a pandemic leads to more appropriate emergency department and hospital resource utilization. This finding is particularly impactful given the current pandemic, which may place a strain on emergency department, and healthcare resources.
["Prevention"]