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Serum vitamin B2 and B12 levels in three groups ((Median (25th–75th))
| Category | Control (n = 200) | EPL (n = 200) | ESCC (n = 200) | p valuea |
|---|---|---|---|---|
| Vitamin B2 (μg/l) | 2592.69 (2074.39–3019.57) | 2344.65 (1887.37–2648.32)b | 2165.86 (2010.11–2577.37)b | < 0.001 |
| Vitamin B12 (ng/l) | 499.07 (375.09–570.88) | 438.91 (365.82–605.93) | 433.07 (386.83–485.20)b | 0.002 |
ap value of Kruskal–Wallis test among the three groups
bCompared with control group, p < 0.001 (Mann–Whitney U test)
