Table 3

Correlations of sleep architecture with measures of glucose homeostasis

TSTN1 durationN1 (%TST)N2 durationN2 (%TST)N3 durationN3 (%TST)REM durationREM (%TST)
Fasting plasma glucose (mg/dL)−0.291*0.1290.195−0.1050.130−0.328−0.160−0.305−0.233
Glu 1 h (mg/dL)−0.293*−0.169−0.082−0.205−0.009−0.0840.041−0.1060.000
Glu 2 h (mg/dL)−0.3660.0540.172−0.2360.086−0.313−0.103−0.221−0.071
HbA1c (%)−0.3570.1460.225−0.1850.050−0.235−0.037−0.350−0.279*
  • All numbers represent correlation coefficients. Glu 1 h, glucose level 1 h after oral glucose ingestion on OGTT; Glu 2 h, glucose level 2 h after oral glucose ingestion on OGTT. Sleep durations are given in minutes (percentages are denoted as %). Numbers in boldface indicate significant association, and numbers in italics indicate near-significant association (P value between 0.017 and 0.05).

  • *P < 0.05.

  • ‡Spearman correlation analysis.

  • P < 0.01.

  • P < 0.017.