<|begin_of_text|><|start_header_id|>system<|end_header_id|>

You are an expert at identifying data availability statements in scientific text. A data availability statement describes where research data can be found or how it can be accessed.<|eot_id|><|start_header_id|>user<|end_header_id|>

Determine if the following text contains a data availability statement. Answer with 'yes' or 'no'.

Text: Little is known about the effectiveness of the approved vaccines in actual practice conditions , outside research settings . Differences in compliance with vaccine doses and intervals , testing for SARS - CoV-2 infection , and management of covid-19 in busy clinical settings may all affect the external validity of reported trial data .<|eot_id|><|start_header_id|>assistant<|end_header_id|>

no<|eot_id|>