Table 1 Variables with comments and definitions

Indication

Snoring/upper airway obstruction/tonsil hypertrophy, recurrent tonsillitis, chronic tonsillitis, peritonsillitis, systemic complications to tonsillitis, other^a

Type of surgery

Tonsillectomy, tonsillectomy with adenoidectomy, tonsillotomy, tonsillotomy with adenoidectomy

Surgical technique, cold surgery

Cold dissection with cold haemostasis (i.e., no electrosurgical instruments used)

Level of care

Outpatient or inpatient care

Tonsillectomy á chaud

Immediate surgery due to acute infection

Postoperative bleeding

Bleeding that required an intervention: return to theatre, administration of anti-haemorrhagic drugs, or a blood transfusion before discharge after index surgery

30-day PROM questionnaire

Definitions and comments

Contact due to bleeding

Medical records: Any type of registered contact (telephone, outpatient visit, readmission) due to bleeding occurring after discharge from index surgery

NTSRS: A yes to the question: “Have you contacted medical care due to bleeding from the throat?”

Admission due to bleeding

Medical records: Readmission due to bleeding occurring after discharge from index surgery

NTSRS: A yes to the question: “Have you been admitted to hospital due to bleeding from the throat?”

Reoperation due to bleeding

Medical records: Reoperation under full anaesthesia due to bleeding occurring after discharge from index surgery

NTSRS: A yes to the question: “Was another surgery performed due to bleeding?”

Contact due to pain

Medical records: Any type of registered contact (telephone, outpatient visit, readmission) due to pain occurring after discharge after index surgery

NTSRS: A yes to the question: “Have you contacted medical care because of pain after the surgery?”