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. 2023 Oct 12;18(10):e0292616. doi: 10.1371/journal.pone.0292616

Fig 3. Mean chromium levels in plasma following MIRPE.

Fig 3

Mean chromium concentrations in plasma (stainless steel group in black, TiN coated bar group in grey), error bars show standard error of the mean. Hatched area indicates values below the reference values. The postoperative concentrations in the TiN coated bar group were compared to preoperative values; the overall difference was statistically significant (p<0.001). Additionally, values at each time point were compared to the corresponding time point of stainless steel bars (*p<0.05; **p<0.01; ***p<0.001). Postop = postoperative, TiN = titanium-nitride, MIRPE = minimally-invasive repair of pectus excavatum.