Figure 1
Mean SpO 2 values according to food intake in the previous 24 h (as a percentage of usual intake). The three left-hand rectangles show that mean SpO2 values vary in the same direction as 24 h % food intake. The first and last rectangles show the significant difference in mean SpO2 values between infants who took < 50% or ≥ 50% of their usual volume of food in the previous 24 h (4 missing data). Length of the rectangles according to the 95% confidence intervals.