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. Author manuscript; available in PMC: 2013 Aug 1.
Published in final edited form as: Psychol Aging. 2012 Jun 18;27(4):989–997. doi: 10.1037/a0028557

Table 3.

Dynamic Relationship Between Sleep Duration and MCI Status

Step 1
Step 2
Coefficients Odds Ratio Coefficients Odds Ratio
Within-person
 Occ Sleep Duration 0.05 (0.10) 1.05 0.21 (0.21) 1.23
 Quadratic Occ Sleep Duration 0.10* (0.04) 1.10 0.09 (0.05) 1.10
 Time of Day 0.00 (0.01) 1.00 −0.00 (0.01) 1.00
Between-person
 Mean Sleep Duration −0.22 (0.24) 0.80 0.27 (0.51) 1.31
 Quadratic Mean Sleep Duration −0.14 (0.11) 0.87 −0.11 (0.15) 0.90
 PSQI 0.34 (0.84) 1.40 0.81 (1.29) 2.24
 Sleep Medication Use 0.22 (0.34) 0.51 0.24 (0.37) 1.27
 Days Between First & Last Test −0.14 (0.10) 0.87 −0.11 (0.12) 0.90
 Gender −2.14* (1.02) 0.12 −2.61* (1.24) 0.07
 Education −0.23 (0.15) 0.80 −0.18 (0.17) 0.83
 CVRFS 0.76** (0.28) 2.13 0.76* (0.32) 2.13
 Non-CVRFS −0.20 (0.34) 0.82 −0.38 (0.41) 0.68
 CES-D 0.01 (0.04) 1.01 −0.01 (0.05) 0.99
 Stress 0.12 (0.78) 1.13 0.95 (1.30) 2.59
Interactions
 Mean Sleep Duration x PSQI −0.16 (0.58) 0.85
 Mean Sleep Duration x Stress −0.79 (0.62) 0.46
 PSQI x Stress −0.98 (1.75) 0.37
 Occ Sleep x Mean Duration Sleep −0.05 (0.11) 0.95
 Occ Sleep Duration x PSQI −0.39 (0.34) 0.68
 Occ Sleep Duration x Stress −0.03 (0.36) 0.97
 Occ Sleep Duration x Mean Sleep Duration x PSQI −0.22 (0.20) 0.81
 Occ Sleep Duration x Mean Sleep Duration x Stress 0.18 (0.19) 1.20
 Occ Sleep Duration x PSQI x Stress 0.08 (0.52) 1.08

Note:

p = .05;

*

p < .05;

**

p<.01.

Occ = Occasion. CVRFS = Cardiovascular risk factors.