Table 1.

Emergent themes mapped to the TDF domains.

	TDF domain	Theme
1.	Knowledge	•Knowledge of hospital PPE policy and procedures
		•Specific knowledge about masks
		•Department poster about PPE
		•Infection control education and communication
2.	Skills	•Prior training in PPE
		•PPE refresher training including Ebola scenario practices
3.	Social/professional role & identity	•Patient / clinician relationship
		•Professional responsibility towards IPC
4.	Beliefs about capabilities	•Self-efficacy donning and doffing PPE
5.	Optimism	•Confidence (or lack of) in protective properties of PPE
6.	Beliefs about consequences	•Perceptions of risk from infectious diseases
		•Previous experience with infectious diseases
		•Protecting self and family from getting ill
		•Protecting the immune-suppressed patient from infection
		•Patients’ use of protective masks
7.	Reinforcement	•Peer reinforcement of gloves use
		•Increase in respiratory viruses in winter
8.	Intentions	•Purposeful deviance from policy
9.	Memory, attention & decision processes	•Habitual use of gloves for procedures
		•Risk assessment for choice of PPE
10.	Environmental context & resources	•Busy, chaotic ED environment
		•Time constraints / urgency of care
		•Unknown diagnosis of patients
		•Ease of access to PPE
		•Usability of PPE
		•Lack of isolation facilities
		•Isolation trolleys
11.	Social influences	•Leadership and role models in department towards using PPE
		•Culture of PPE use in department
12.	Emotion	•Anxiety about diseases
13.	Behavioural regulation	•IPC audits
		•Hand hygiene audits

*No data was identified that related to the TDF domain ‘Goals’.

Abbreviations: PPE = Personal Protective Equipment; ED = Emergency Department; IPC = Infection Prevention and Control.