[
  "age",
  "height",
  "weight",
  "asa",
  "emop",
  "department",
  "optype",
  "approach",
  "preop_htn",
  "preop_dm",
  "preop_hb",
  "preop_plt",
  "preop_pt",
  "preop_aptt",
  "preop_na",
  "preop_k",
  "preop_gluc",
  "preop_alb",
  "preop_ast",
  "preop_alt",
  "preop_bun",
  "preop_cr",
  "intraop_ebl",
  "intraop_uo",
  "intraop_rbc",
  "intraop_ffp",
  "intraop_crystalloid",
  "intraop_colloid",
  "intraop_ppf",
  "intraop_mdz",
  "intraop_ftn",
  "intraop_rocu",
  "intraop_vecu",
  "intraop_eph",
  "intraop_phe",
  "intraop_epi",
  "intraop_ca",
  "cline1_present",
  "cline2_present",
  "aline1_present",
  "aline2_present",
  "iv2_present",
  "ETT_present",
  "LMA_present",
  "DLT_present",
  "no_airway",
  "airway_non_oral",
  "intraop_uo_missing",
  "intraop_ebl_missing",
  "position_supine",
  "preop_ecg_abnormal",
  "preop_pft_abnormal",
  "ane_general",
  "dx_group",
  "sex_binary",
  "case_duration",
  "ane_duration"
]