Table 1 Systemic factors possibly influencing referrals to CLP

Increase CLP referral

1. Presence of dedicated CLP Service [30–33, 35]

2. Active engagement of CLP consultant [35]

3. Collaborative screening of inpatients [34]

Decrease CLP referral

1. Lack of detailed suicide prevention strategy [36, 37]

2. Poor CLP communication [32]

Unclear influence

1. Work pressure [38]

2. Presence of mental health nurse [39]