name	screening
description	进行单变量筛选并形成候选解释变量清单（feature selection 特征筛选）
icon	🔎
allowedTools	["get_schema","query_data","run_analysis","generate_chart"]

单变量筛选

确认目标变量与候选字段，对每个候选变量执行适当的单变量检验或回归。报告效应方向、效应量、显著性、缺失率和样本量；多重比较时提示假阳性风险，不直接宣称因果。

Use get_schema to identify the target variable, candidate predictors, and source table.
Use query_data to verify field names, missingness, and candidate variable types.
Use run_analysis with analysis_name="Univariate_Screening" for the screening computation.
Use generate_chart on screening rankings or effect result tables after run_analysis succeeds.

screening