Type of information and indicators recorded across all operating theatre registers
| Categories of information recorded | Sources of variation in indicator terminology |
| Patient demographics | Name Address Sex Age Ward Gravidity (number of pregnancies) Parity (number of viable births) |
| Diagnosis | |
| Type of procedure | |
| Category | Emergency/Elective surgery Major/Minor surgery |
| Patient status | American Society of Anesthesiologists physical status score Condition before operation |
| Anaesthesia | Type of anaesthesia (general/regional/local) Specific anaesthetic drugs used |
| Surgical team | |
| Post-operative observations | Vital signs Post-operative destination (ward patient is taken to) |
| Outcome of surgery | Performance (successful/not successful; good/fair/fine; satisfactory/or not) Complications Patient status on transfer to ward (dead/alive; stable/unstable) |
| Operative birth details | Time of delivery Baby outcome Baby weight Apgar score Sex Ward baby is taken to Condition of mother (stable/unstable) |