Description: SpO2 values, mean reductions and statistical significance by nail polish colour (n=100)
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Description: Mean ± SD SpO2 values for each nail polish colour and bare nails (dotted line B). Black and red polish show clearly greater reductions compared to the rest.
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Description: Comparison of SpO2 reduction across nine nail polish colours. Pink showed the least impact; black showed the most. The gradient illustrates how colour shade relates to the degree of interference with oximetry readings
