Patient Demographics and Anesthesia/Surgery Data, Beijing, China (N = 830).

1 Magnitude of surgery as below: minor surgery: excision of lesion of skin; drainage of breast abscess, etc. Intermediate surgery: primary repair of inguinal hernia; excision of varicose vein(s) of leg; tonsillectomy/adenotonsillectomy; knee arthroscopy, etc. major surgery: total abdominal hysterectomy; endoscopic resection of prostate; lumbar discectomy; thyroidectomy, etc. major surgery plus: total joint replacement; lung operations; colonic resection; radical neck dissection; neurosurgery; cardiac surgery) 2 Arthroscopic, laparoscopic, etc 3 Time from incision to closure 4 Time from induction to discontinuation of anesthetic agents Patient Demographics and Anesthesia/Surgery Data, Beijing, China (N = 830).