“…All interventions were provided after birth but in seven studies there was also an antenatal component (Demirci et al, 2019; Efrat et al, 2015; Kamau‐Mbuthia et al, 2013; Martinez‐Brockman et al, 2018; Patel et al, 2018; Reeder et al, 2014; Unger et al, 2018). The frequency of interventions was variable with nine being open access and/or whenever needed by the mother (Ahmed et al, 2016; Gonzalez‐Darias et al, 2020; Kamau‐Mbuthia et al, 2013; Lewkowitz et al, 2020; Maslowsky et al, 2016; Niela‐Vilen et al, 2016; Seguranyes et al, 2014; Simonetti et al, 2012; Uscher‐Pines et al, 2019). In seven studies interventions were provided weekly (Abbass‐Dick et al, 2015; Cavalcanti et al, 2019; Forster et al, 2019; Fu et al, 2014; Palacios et al, 2018; Reeder et al, 2014; Unger et al, 2018) and six were every 1–2 days (Demirci et al, 2019; Ericson et al, 2018; Hagi‐Pedersen et al, 2017; Hoddinott et al, 2012; Lucas et al, 2019; Patel et al, 2018).…”