<|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: We described a multi-wave adaptive sampling approach to approximate the optimal two-phase design for fitting a regression model using design-based estimators. The prior knowledge of parameters and phase-1 **data** combine to be usable to approximate the optimal wave 1, so we use the whole cohort information at the design stage even before phase-2 sampling. With reasonable well-calibrated priors, the efficiency of the proposed design is very close to the underlying optimal design.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

no<|eot_id|>