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Table 1 Main measurement results of two milk analyzers (mean ± SD)

From: Comparing human milk macronutrients measured using analyzers based on mid-infrared spectroscopy and ultrasound and the application of machine learning in data fitting

  MIR (n = 546) Ultrasound
(n = 465)
Adjusted ultrasound
(n = 465)
P-valuea P-valueb
Protein (g/dl) 2.27 ± 0.20 1.29 ± 0.26 2.28 ± 0.26 < 0.0001 0.9998
Fat (g/dl) 3.09 ± 0.77 2.83 ± 1.18 3.15 ± 0.54 < 0.0001 0.8396
Lactose (g/dl) 6.03 ± 0.39 7.33 ± 0.34 5.99 ± 0.34 < 0.0001 0.9997
Energy (kj/dl) 268.51 ± 33.69 259.07 ± 46.48 269.80 ± 20.78 < 0.0001 0.9224
  1. Paired t-test was used for comparison between groups; Continuous variables were presented as mean ± SD; MIR: mid-infrared
  2. a refers to the comparison between MIR and ultrasound results
  3. b refers to the comparison between MIR and adjusted ultrasound results