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. Author manuscript; available in PMC: 2018 Apr 1.
Published in final edited form as: Endocrine. 2017 Feb 13;56(1):164–174. doi: 10.1007/s12020-017-1231-7

Table 2.

Correlations and levels of significance of biochemical data in all patients (n=36). Hair cortisol values (measured in pmol/g dry hair weight) were log10-transformed for normality when undergoing statistical analysis. All tests represented lab values from all 36 patients, except for the ACTH values, which excluded one patient due to lack of collection. Diurnal ACTH values (n=35) are not presented, because the r-value for all was ≤0.2 with a p-value ≥0.3.

Hair cortisol segment (distance in cm from scalp) Average UFC/BSA over D1+D2 (nmol/24h/m2) Average 17-OHS/Cr over D1+D2 (mmol/24h/mol Cr) Midnight cortisol (nmol/L) Early morning cortisol (nmol/L)

r p r p r p r p
1 Proximal 0.5 0.005 0.3 0.06 0.4 0.03 0.3 0.09
2 Medial 0.3 0.05 0.2 0.2 0.2 0.3 0.2 0.3
3 Distal 0.3 0.1 0.2 0.3 0.1 0.5 0.1 0.5

Average over 3 cm 0.4 0.03 0.3 0.1 0.2 0.2 0.2 0.2

Statistical significance was considered for p’s<0.05. D1+D2=Day 1 and Day 2.