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. Author manuscript; available in PMC: 2012 Oct 1.
Published in final edited form as: J Agromedicine. 2011 Oct;16(4):251–260. doi: 10.1080/1059924X.2011.605722

Table 2.

Inter-correlation of depressive symptoms with daytime sleepiness over time.

(1) (2) (3) (4) (5) (6)
Depression, June (1) 1.00
Sleepiness, June (2) 0.36*** 1.00
Depression, July (3) 0.28** 0.14 1.00
Sleepiness, July (4) 0.16 0.42*** 0.21* 1.00
Depression, August (5) 0.13 0.25** 0.21* 0.09 1.00
Sleepiness, August (6) 0.18 0.25** 0.07 0.32*** 0.21* 1.00
*

p < 0.05,

**

p < .01,

***

p < .001 (two-tailed)