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Table 11 Results of a simple regression analysis of depression and psychological symptoms in predicting sleep disorders in breast cancer patients (N=93)

From: Sleep disorders and their relationship to other psychiatric disorders in women with breast cancer: a case-control study

Predictive variables Predicted variables R R Square B Beta F T
Beck depression Insomnia .445 198. .436 .445 22.487 4.742
Hypersomnia .406 .165 .204 .406 17.931 4.235
Interrupted sleep .407 .165 .262 .407 18.016 4.245
Nightmare disorder .444 .198 .246 .444 22.403 4.733
Night dismay .494 .244 .339 .494 29.406 5.423
Sleep walking disorder .478 .229 .257 .478 26.986 5.195
Total sleep disorder .502 .252 1.736 .502 30.666 5.538
Somatization Insomnia .272 .074 2.364 .272 7.245 2.692
Hypersomnia .237 .056 1.058 .237 5.393 2.322
Interrupted sleep .267 .071 1.533 .579 7.006 2.647
Nightmare disorder .303 .092 1.598 .303 9.207 3.034
Sleep walking disorder .386 .149 1.847 .462 15.963 3.995
Total sleep disorder .306 .049 9.559 .306 9.429 3.071
Obsession Insomnia .343 .118 3.367 .343 12.134 3.483
Hypersomnia .243 .059 1.226 .243 5.717 2.391
Nightmare disorder .347 .120 2.060 .585 12.422 3.525
Night dismay .284 .062 1.707 .284 5.983 2.446
Sleep walking disorder .426 .181 2.297 .426 20.177 4.492
Total sleep disorder .339 .115 11.937 .339 11.841 3.441
Anxiety Insomnia .326 .106 3.039 .326 10.805 3.287
Hypersomnia .297 .088 1.424 .297 8.811 2.968
Interrupted sleep .319 .101 1.957 .319 10.280 3.206
Nightmare disorder .312 .097 1.763 .312 9.812 3.134
Night dismay .222 .049 1.450 .222 4.713 2.171
Sleep walking disorder .327 .107 1.674 .327 10.867 3.297
Total sleep disorder .338 .114 11.308 .338 11.753 3.428
Hostility Insomnia .268 .072 2.121 .268 7.054 2.656
Hypersomnia .243 .059 .987 .243 5.710 2.390
Interrupted sleep .225 .051 1.174 .225 4.870 2.207
Nightmare disorder .315 .099 1.510 .315 10.053 3.171
Sleep walking disorder .242 .059 1.051 .242 5.658 2.379
Total sleep disorder .275 .076 7.796 .275 7.453 2.730
Phobic anxiety Insomnia .380 .144 2.615 .380 15.358 3.919
Interrupted sleep .318 .101 1.440 .318 10.215 3.196
Nightmare disorder .403 .162 1.680 .403 17.645 4.201
Night dismay .275 .076 1.326 .275 7.459 2.731
Sleep walking disorder .253 .064 .958 .253 6.249 2.500
Total sleep disorder .354 .125 8.718 .354 12.996 3.605
Paranoid ideation Insomnia .250 .063 2.136 .250 6.056 2.467
Hypersomnia .243 .059 1.066 .243 5.718 2.391
Interrupted sleep .230 .053 1.292 .230 5.082 2.254
Sleep walking disorder .225 .051 1.056 .225 4.870 2.207
Total sleep disorder .211 .045 6.457 .211 4.248 2.061
Psychoticism Insomnia .363 .132 4.174 .363 13.823 3.718
Hypersomnia .233 .054 1.374 .233 5.206 2.282
Interrupted sleep .220 .048 1.662 .220 4.609 2.147
Nightmare disorder .330 .109 2.296 .330 11.107 3.333
Sleep walking disorder .362 .131 2.284 .362 13.708 3.702
Total sleep disorder .324 .105 13.329 .324 10.643 3.262
  1. (Value =.01 & .001)