“…The type of advice provided can be divided into three categories; health promotion [19,25,31,42,43]; assistance in accessing appropriate services and the related symptom triage [43,48]; or reporting, such as reporting back on out-reach work completed or the outbreak of an infectious disease [23,26,33,34,37,43]. Frequency of contact varied in that the telephone service may supplement home visits [28,38,57] or simply be a one-off call.…”