Table 3.
Correlations of sleep architecture with measures of glucose homeostasis
| TST | N1 duration‡ | N1 (%TST)‡ | N2 duration | N2 (%TST) | N3 duration | N3 (%TST) | REM duration | REM (%TST) | |
|---|---|---|---|---|---|---|---|---|---|
| Fasting plasma glucose (mg/dL) | −0.291 * | 0.129 | 0.195 | −0.105 | 0.130 | −0.328 † | −0.160 | −0.305 ‖ | −0.233 |
| Glu 1 h (mg/dL) | −0.293 * | −0.169 | −0.082 | −0.205 | −0.009 | −0.084 | 0.041 | −0.106 | 0.000 |
| Glu 2 h (mg/dL)‡ | −0.366 † | 0.054 | 0.172 | −0.236 | 0.086 | −0.313 ‖ | −0.103 | −0.221 | −0.071 |
| HbA1c (%) | −0.357 † | 0.146 | 0.225 | −0.185 | 0.050 | −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.