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Table 3 Hierarchical Multiple Logistic Regression Analyses of purpose in life and risk of sleep apnea

From: Is purpose in life associated with less sleep disturbance in older adults?

   β SE p Odds ratio 95% CI Χ 2 Nagelkerke R 2
Risk of Sleep Apnea at Baseline (n = 808) Step 1       17.707 (4) ** .029
 Sex .282 .172 .101 1.325 .947–1.856   
 Years of Education −.053 .024 .028 .348 .904–.994   
Age −.036 .010 .001 .365 .945–.985   
 Race −.252 .155 .104 .778 .574–1.053   
Step 2       25.408 (5) ** .042
 Sex .294 .173 .089 1.341 .956–1.881   
 Years of Education −.040 .025 .102 .961 .915–1.008   
Age −.043 .011 .000 .957 .937–.978   
 Race −.248 .156 .111 .780 .575–1.059   
Purpose in Life −.462 .168 .006 .630 .454–.875   
Risk of Sleep Apnea at
1-Year Follow-Up (n = 810)
Step 1       17.563 (4) ** .029
 Sex .187 .171 .274 1.206 .862–1.688   
 Years of Education −.036 .024 .132 .965 .920–1.011   
Age −.038 .011 .000 .963 .943–.983   
 Race −.002 .154 .990 .998 .737–1.351   
Step 2       21.608 (5) * .035
 Sex .195 .172 .257 1.215 .867–1.702   
 Years of Education −.026 .024 .282 .974 .929–1022   
Age −.043 .011 .000 .958 .937–.978   
 Race .001 .155 .996 1.001 .739–1.356   
Purpose in Life −.331 .165 .045 .719 .520–.993   
Risk of Sleep Apnea at
2-Year Follow-Up (n = 548)
Step 1       10.360 (4) * .025
 Sex .296 .203 .146 1.344 .903–2.002   
 Years of Education −.045 .029 .124 .956 .903–1.012   
Age −.027 .014 .047 .973 .948–1.000   
 Race .175 .189 .354 1.191 .823–1.724   
Step 2       15.816 (5) ** .038
 Sex .322 .205 .116 1.380 .924–2.060   
 Years of Education −.030 .030 .312 .971 .916–1.028   
Age −.034 .014 .016 .967 .941–.994   
 Race .184 .190 .332 1.202 .829–1.743   
Purpose in Life −.503 .217 .020 .604 .395–.925   
Risk of Sleep Apnea at
3-Year Follow-Up (n = 242)
Step 1       3.983(4) .022
 Sex −.056 .307 .856 .946 .518–1.728   
 Years of Education −.033 .047 .479 .967 .882–1.060   
 Age −.032 .022 .142 .969 .928–1.011   
 Race .154 .299 .607 1.167 .649–2..097   
Step 2       4.094 (5) .023
 Sex −.051 .308 .869 .951 .520–1.738   
 Years of Education −.029 .049 .556 .972 .883–1.069   
 Age −.034 .022 .132 .967 .925–1.010   
 Race .147 .300 .625 1.158 .643–2.085   
 Purpose in Life −.104 .312 .739 .901 .489–1.661   
  1. Four separate regression analyses. * = p ≤ .05, ** = p ≤ .01, bolding is used to emphasize significant predictors within the models