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Table 2 Excluded studies

From: Age of introduction of first complementary feeding for infants: a systematic review

Study (design) Reason behind exclusion
Adu-Afarwuah et al. 2007 [28] (RCT) Age of introduction of solids > 6 mo
Bisimwa et al. 2012 [29] (RCT) Age of introduction of solids > 6 mo
Fewtrell et al. 2012 [30] (RCT) Age of introduction of solids > 6 mo
Gibson et al. 2011 [31] (RCT) Age of introduction of solids > 6 mo
Hambidge et al. 2004 [32] (RCT) Age of introduction of solids > 6 mo
Krebs et al. 2011 [33] (RCT) Age of introduction of solids > 6 mo
Ly et al. 2006 [34] (RCT) No EBF group (no control group)
Martin-Calama et al. 1997 [35] (RCT) Age of introduction of solids < 4 mo
Mehta et al. 1998 [36] (RCT) Age of introduction of solids < 4 mo
Mosley et al. 2001 [37] (RCT) Preterm infants
Nicoll et al. 1982 [38] (RCT) Newborn infants
Ojofeitimi and Elegbe 1982 [39] (RCT) Newborn infants
Phuka et al. 2008 [40] (RCT) Age of introduction of solids > 6 mo
Rivera et al. 2004 [41] (RCT) Age of introduction of solids non specified
Roy 2006 [42] (RCT) Age of introduction of solids > 6 mo. Malnourished infants
Sachdev et al. 1991 [43] (RCT) Water supplementation. Infants age <4 mo
Saleem 2010 [44] (RCT) Age of introduction of solids > 6 mo
Sarker 2009 [45] (RCT) Age of introduction of solids > 6 mo. No EBF group
Schutzman et al. 1986 [46] (RCT) Newborn infants
Simondon et al. 1996 [47] (RCT) No EBF group
Ziegler et al. 2009 [48] (RCT) Non EBF
Ahmed et al. 1993 [49] Age of introduction of solids < 4 mo
Armar-Klemesu et al. 1991 [50] Age of introduction of solids non specified
Arvas et al. 2000 [51] Medicinal iron supplementation
Baker et al. 2004 [52] Age of introduction of solids < 4 mo
Baird et al. 2008 [53] Mixed feeding (formula + BM)
Calvo et al. 1992 [54] Age of introduction of solids was at 6 mo for both groups
Castro et al. 2009 [55] Mixed feeding (formula + BM), no data on postnatal birth wt and conditions
Chantry et al. 2007 [56] Non EBF (other foods introduced)
Domellöf et al. 2001 [57] Age of introduction of solids > 6 mo, medicinal iron supplementation
Dube et al. 2010 [58] No analysis on early vs late introduction of solids among the groups
Durá Travé & Diaz Velaz 2002 [59] Early weaned group had mixed feeding (formula + BM)
Eissa et al. 1990 [60] Age of introduction of solids non specified
Filipiak et al. 2007 [61] Mixed feeding (formula + BM), no EBF group
Forsyth et al. 1993 [62] Age of introduction of solids < 4 mo
Freeman et al. 1998 [63] Mixed feeding (formula + BM)
Gray 1996 [64] Mixed feeding (formula + BM)
Haschke & van’t Hof 2000 [65] Age of introduction of solids < 4 mo
Heinig et al. 1993 [66] Mixed feeding (formula + BM), age of introduction of solids = or > 6 months
Hokama 1993 [67] No analysis on association between age of introduction of solids and iron parameters
Kajosaari & Saarinen 1983 [68] Age of introduction of solids < 4 mo
Kajosaari 1991 [69] Age of introduction of solids < 4 mo
Kikafunda et al. 2009 [70] Age of introduction of solids > 6 mo
Kramer et al. 2011 [71] Age of introduction of solids at 1, 2, 3 mo
Lartey et al. 1999 [72] Age of introduction of solids > 6 mo
López-Alarcón et al.1997 [73] Age of introduction of solids < 4 mo
Marlin et al. 1980 [74] Age of introduction of solids < 4 mo
Marquis et al. 1997 [75] Infants age group 12-15 mo
Messiah et al. 2012 [76] Non specific information on how exclusive breastfeeding in BF and in CF groups
Nielsen et al.1998 [77] No analysis on association between age of introduction of solids among EBF and growth
Piwoz et al. 1996 [78] Age of introduction of solids < 4 mo
Popkin et al. 1990 [79] Age of introduction of solids non specified
Quigley et al. 2009 [80] No analysis on the type of milk received by CF group
Rowland et al. 1988 [81] Age of introduction of solids non specified
Saarinen & Siimes 1978 [82] Age of introduction of solids < 4 mo. Mixed feeding (formula + BM)
Salmenpera et al. 1985 [83] Age of introduction of solids < 4 mo
Simondon & Simondon 1997 [84] Age of introduction of solids < 4 mo
Sloan et al. 2008 [85] Age of introduction of solids < 4 mo
Victora et al. 1998 [86] Age of introduction of solids < 4 mo, low birth weight infants included in the analysis
Wilson et al. 1998 [87] Age of introduction of solids < 4 mo
Wilson et al. 2006 [88] Age of introduction of solids < 4 mo
Zhou et al. 2012 [89] Age of introduction of solids > 6 mo
  1. N.B: CF complementary feeding, EBF exclusively breastfeeding, mo month