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. Author manuscript; available in PMC: 2021 Aug 1.
Published in final edited form as: J Consult Clin Psychol. 2020 Aug;88(8):786–797. doi: 10.1037/ccp0000499

Table 1:

Descriptive Statistics and Zero-Order Correlations Among Primary Study Variables

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
  1 Gendera -
  2 Age −0.095 -
  3 Treatment Groupb −0.013 −0.099 -
  4 Medicationc 0.013 0.138 −0.042 -
  5 Comorbidityd −0.114 −0.149 −0.016 0.090 -
  6 Ethnicitye −0.040 −0.043 0.082 −0.123 0.156 -
  7 SIGH-SAD Baseline 0.030 −0.001 −0.067 0.077 0.166 0.044 -
  8 SIGH-SAD Tx Week 1 0.036 −0.002 −0.122 0.090 0.153 0.059 0.313 -
  9 SIGH-SAD Tx Week 2 0.065 −0.080 −0.048 0.054 0.082 −0.053 0.425 0.642 -
10 SIGH-SAD Tx Week 3 0.050 0.023 −0.039 0.116 0.107 −0.087 0.190 0.600 0.597 -
11 SIGH-SAD Tx Week 4 0.063 −0.051 −0.034 −0.009 0.167 −0.102 0.320 0.442 0.489 0.510 -
12 SIGH-SAD Tx Week 5 0.145 −0.019 −0.152 −0.012 0.116 −0.036 0.284 0.311 0.387 0.314 0.634 -
13 SIGH-SAD Tx Week 6 0.034 0.046 −0.112 0.059 0.116 0.001 0.266 0.361 0.416 0.400 0.455 0.431 -
14 BDI-II Baseline 0.063 0.015 0.046 0.099 0.159 0.080 0.407 0.371 0.358 0.267 0.272 0.231 0.296 -
15 BDI-II Tx Week 3 0.115 −0.104 −0.083 0.054 0.125 −0.041 0.235 0.566 0.570 0.661 0.532 0.362 0.414 0.497 -
16 BDI-II Tx Week 6 0.022 −0.042 −0.080 0.056 0.171 −0.016 0.283 0.243 0.310 0.263 0.320 0.329 0.699 0.352 0.476 -
17 DAS Baseline 0.132 −0.224 0.010 0.006 0.269 0.117 0.192 0.193 0.247 0.082 0.200 0.033 0.137 0.418 0.306 0.153 -
18 DAS Tx Week 3 0.158 −0.232 −0.078 −0.027 0.301 −0.028 0.187 0.196 0.320 0.247 0.254 0.146 0.230 0.304 0.435 0.276 0.707 -
19 DAS Tx Week 6 0.091 −0.281 −0.007 −0.074 0.258 −0.060 0.124 0.126 0.275 0.120 0.160 0.100 0.184 0.262 0.306 0.230 0.663 0.814 -
20 MEQ Baseline 0.028 0.213 0.064 −0.082 −0.205 0.006 −0.121 −0.123 −0.214 −0.084 −0.075 −0.140 −0.152 −0.046 −0.138 −0.263 −0.152 −0.063 −0.111 -
21 MEQ Tx Week 3 0.088 0.223 0.119 −0.076 −0.196 −0.064 −0.093 −0.047 −0.131 −0.035 −0.087 −0.213 −0.107 0.020 −0.174 −0.286 −0.152 −0.145 −0.189 0.860 -
22 MEQ Tx Week 6 −0.016 0.241 0.130 −0.038 −0.195 −0.015 −0.166 −0.063 −0.154 −0.045 −0.094 −0.244 −0.165 −0.023 −0.147 −0.308 −0.156 −0.159 −0.194 0.866 0.925 -
23 SBQ Baseline 0.035 0.103 −0.081 0.047 0.114 −0.032 0.227 0.322 0.239 0.101 0.190 0.158 0.069 0.325 0.228 0.140 0.162 0.085 0.134 −0.020 −0.102 −0.071 -
24 SBQ Tx Week 3 −0.067 0.154 0.003 −0.025 0.064 −0.102 0.136 0.243 0.247 0.275 0.247 0.173 0.154 0.204 0.340 0.122 0.081 0.132 0.135 −0.067 −0.133 −0.116 0.710 -
25 SBQ Tx Week 6 −0.062 0.065 0.140 0.006 0.065 −0.049 0.179 0.200 0.312 0.258 0.275 0.195 0.234 0.254 0.354 0.295 0.137 0.165 0.239 −0.095 −0.201 −0.165 0.562 0.734 -
N 177 177 177 177 177 177 177 154 153 154 149 149 173 177 164 172 176 164 173 167 158 171 175 163 171
M 0.836 45.638 0.503 0.254 0.266 0.079 27.746 22.968 19.582 17.857 14.866 13.785 12.197 23.95 13.15 7.9709 126.5 114.4 106.6 53.34 54.82 56.3 141.4 133.6 127.9
SD 0.371 12.742 0.501 0.437 0.443 0.271 5.485 7.856 7.790 7.381 7.603 6.913 6.795 9.094 7.122 6.488 33.62 31.17 28.85 11.18 10.91 11.29 16.02 16.79 21.4

Note: Italics = p < .05. Baseline = pre-treatment, Week 6 = post-treatment (treatment endpoint). SIGH-SAD = Structured Interview Guide for the Hamilton Rating Scale for Depression—Seasonal Affective Disorder Version., BDI-II = Beck Depression Inventory—Second Edition, DAS = Dysfunctional Attitudes Scale-Form A, MEQ = Horne-Östberg Morningness-Eveningness Questionnaire, SBQ = Seasonal Beliefs Questionnaire. Tx = treatment.

a

Gender was coded as 0 = male, 1 = female; therefore, the mean gender score of 0.836 indicates that 83.6% of the sample identified as female.

b

0 = CBT-SAD, 1 = light therapy.

c

0 = not taking antidepressant medication, 1 = taking antidepressant medication.

d

0 = no comorbid diagnosis, 1 = presence of at least one comorbid diagnosis.

e

0 = non-Hispanic White, 1 = all others.