Table 2 Demographic characteristics of the participants

 Female

5

 Male

5

 18–39

4

 40–64

4

 64 years +

2

 Elective

6

 Emergency

4

 Day-stay

4

 Overnight

6

 Colorectal / General Surgery

6

 Orthopaedic

3

 Upper GI

2

 Oral Surgery

1

 Gynaecology

1

 Schizophrenia

3

 Bipolar Disorder

3

 Schizoaffective Disorder

2

 Post-traumatic Stress Disorder including complex

2

 Severe Depression

2

 Psychosis

1

 Obsessive Compulsive Personality Disorder

1

 Severe Anxiety

1