Table 1.

Inclusion criteria for Cardiology, Gynaecology and Urology cohorts using International Classification of Diseases-10 (ICD-10) diagnosis codes and Scottish Morbidity Records (SMR) procedure codes

Cardiology cohort

Inclusion criteria:

Cardiology inpatient/day-case episode; General Medicine inpatient/day-case episode with Cardiology diagnosis code (International Classification of Diseases-10 I20-I25, I26-I28, I30-I52); Cardiology outpatient attendance; or procedure code U20.2 Transoesophageal echocardiography

Exposure classed as procedure code:

U20.2 Transoesophageal echocardiography

Gynaecology cohort

Inclusion criteria:

Gynaecology inpatient/day-case episode or outpatient attendance

Exposure classed as procedure code:

Q55.5 Transvaginal ultrasound examination of female genital tract

Q51.5 Transvaginal ultrasound guided aspiration of ovarian cyst

Q21 Placement/removal of intra-uterine device AND U09.2 ultrasound of pelvis

Q48.4 Transvaginal oocyte recovery

Q55.9 Unspecified examination of female genital tract AND U09.2 Ultrasound of pelvis

Urology cohort

Inclusion criteria:

Urology inpatient/day-case episode or outpatient attendance

Exposure classed as procedure code:

M70.3 Rectal needle biopsy of prostate

M70.6 Radioactive seed implantation into prostate