Skip to main content
. Author manuscript; available in PMC: 2014 Dec 1.
Published in final edited form as: J Affect Disord. 2013 Aug 13;151(3):10.1016/j.jad.2013.07.019. doi: 10.1016/j.jad.2013.07.019

Table 1.

Primary Prediction Models for Depressive Symptoms Outcomes in the Oregon and Iowa Subsamples

Oregon Iowa

B SE β B SE β
Model 1:
Full
Sample
Continuous
Outcome
Age −0.01 0.00 *** −0.14 −0.02 0.00 *** −0.01
Age2 0.00 0.00 ** 0.04 0.00 0.00 *** −0.05
Gender -- -- -- 0.41 0.05 *** −0.64
Day of year 0.07 0.02 ** 0.14 0.43 0.11 *** −0.67
Day2 −0.04 0.02 −0.28 −0.26 0.07 *** 0.97
Day3 0.01 0.01 0.15 0.04 0.01 ** −0.45
Intercept 2.16 0.04 *** −1.44 0.06 ***

Likelihood-ratio
test 150.32 *** 367.43 ***
ICC .434 .429
Observations 3476 4840
N 206 556

OR SE β OR SE β
Model 2:
Full
Sample
Binary
Outcome
Age group 0.52 0.22 ** 0.75 0.52 0.27 * 0.73
Age 1.01 0.01 1.09 1.06 0.03 * 0.96
Age2 1.00 0.00 0.87 0.99 0.00 0.84
Gender -- -- -- 0.95 0.22 0.92
Day of year 1.02 0.08 1.03 6.17 0.66 ** 16.87
Day2 0.98 0.12 0.92 0.32 0.42 ** 0.01
Day3 1.00 0.03 1.05 1.21 0.08 * 7.26

Likelihood-ratio
test 3.10 11.75
Observations 3476 4840
N 206 556

B SE β B SE B
Model 3:
Clinical
Subsample
Continuous
Outcome
Age −0.01 0.00 ** −0.09 −0.01 0.01 * −0.01
Age2 0.00 0.00 0.02 0.00 0.00 * −0.05
Gender -- -- -- 0.32 0.06 *** −0.49
Day of year 0.06 0.03 * 0.13 0.58 0.20 ** −0.91
Day2 −0.02 0.03 −0.14 −0.35 0.13 ** 1.29
Day3 0.00 0.01 0.02 0.06 0.02 * −0.58
Intercept 2.42 0.04 *** −0.91 0.10 ***

Likelihood-ratio
test 72.72 *** 159.75 ***
Observations 2145 1903
N 126 212

Note. B = unstandardized beta coefficient; SE = standard error; β = standardized beta coefficient; OR = odds ratio; ICC = Intraclass correlation coefficient.

coefficients only standardized for the covariate.

***

p < .001.

**

p < .01.

*

p < .05.