“…The review identified fear (Ottong et al , ; Duboz et al , ; von Zahran & von Ali, ; Pule et al , ; Adegoke, ) as the single most reported deterrent, mentioned in 25 studies and cited by 35–86·7% in these studies. Fears related to pain from the blood donation process (Koster & Hassall, ), adverse effects (Mwaba & Keikelame, ; Olaiya et al , ; Umeora et al , ; Salaudeen & Odeh, ; Rolseth et al , ; Muthivhi et al , ), the sight of blood (Muthivhi et al , ), and contagion (Jacobs & Berege, ; Gobatto, ; Olaiya et al , ; Umeora et al , ; Agbovi et al , ; Salaudeen & Odeh, ; Haoses‐Gorases & Katjire, ; Agasa & Likwela, ; Sekoni et al , ; Muthivhi et al , ) or perceived side effects of donation, such as fear of falling sick (Jacobs & Berege, ; Umeora et al , ; Agbovi et al , ; Agasa & Likwela, ; Alinon et al , ; Kabinda et al , ; Rolseth et al , ; Sekoni et al , ; Muthivhi et al , ; Natukunda et al , ; Melku et al , ); and fear of the spirituality of blood (Gobatto, ; Umeora et al , ; Alinon et al , ). Other deterrents cited were lack of knowledge, information and awareness of need; as well as low self‐efficacy (lack control over events that affect a person's life and own functioning), inconvenience of time and donation site, and religiousity (religious affiliation or spiritual commitment).…”