[
  "age",
  "augmentation",
  "sinus_lift",
  "implant_length_mm",
  "implant_diameter_mm",
  "bisphosphonate_use",
  "immunosuppressant_use",
  "bone_density_code",
  "surgeon_experience",
  "alcohol",
  "betel_nut",
  "sex_female",
  "sex_male",
  "smoking_status_current",
  "smoking_status_former",
  "smoking_status_never",
  "smoking_status_unknown",
  "diabetes_status_no",
  "diabetes_status_unknown",
  "diabetes_status_yes",
  "periodontal_history_",
  "jaw_mandible",
  "jaw_maxilla",
  "region_anterior",
  "region_posterior"
]