. Author manuscript; available in PMC: 2019 Oct 18.

Published in final edited form as: Prostaglandins Leukot Essent Fatty Acids. 2018 May 17;134:7–16. doi: 10.1016/j.plefa.2018.05.001

Table 3. Evaluation of analyte standardization approach variance minimization using the chi-square (χ²) statistic.

The variance in each of the 58 reported analytes processed through the four standardization factors were compared, with the per Sebutape® standardization set as the reference. If equivalent, 50% of analytes would have a lower %CV than the reference approach.

Standardizing Factor	AD			Control

	n > 1 (%)^a	χ²	P	n > 1 (%)^a	χ²	P
Sebumeter® reading	48 (83%)	12.45	0.0004	48 (83%)	12.45	0.0004
Total TFA	51 (88%)	16.69	0.00004	22 (38%)	1.69	0.2
Total NEFA	49 (84%)	13.79	0.0002	37 (64%)	2.21	0.1

The number (and percentage) of reported analytes with variance greater than the reference per Sebutape® standardization approach.

Table 3. Evaluation of analyte standardization approach variance minimization using the chi-square (χ2) statistic.

Table 3. Evaluation of analyte standardization approach variance minimization using the chi-square (χ²) statistic.