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. 2020 Sep 22;12(9):2896. doi: 10.3390/nu12092896

Table 4.

Vitamin B12: Percentage (%) of patients with deficiencies at each postoperative visit.

Study Preop (%) 3 Months (%) 6 Months (%) 12 Months (%) 24 Months (%) 36 Months (%) 60 Months (%)
Hakeam et al. 8.1 19.6 26.2
Gehrer et al. 3 2 12 14 14
Aarts et al. 9
Ruiz-Tovar et al. 0 0 0 0 0
Kehagias et al. 3.3 3.5
Damms-Machado et al. 9.3 4.8 9.8 17.2
Moize et al. 2.7 3.7 3.2 5.9 12.5
Saif et al. 2.9
Eltweri et al. 20
Belfiore et al. 10.7 9 6
Ben-Porat et al. 11.7 16.7
Al-Mulhim 1.8 7.1 14.3
Gillon et al. 6.5 19 12.8 3.8
Zarshenas et al. 1 3 0 0 0