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Table 3 Separate pre-post comparisons with effect sizes for the two conditions

From: Sleep better, feel better? Effects of a CBT-I and HT-I sleep training on mental health, quality of life and stress coping in university students: a randomized pilot controlled trial

Variable N SWIS t p d N WLC t p d
Pre M (SD) Post M (SD) Pre M (SD) Post M (SD)
Mental health
 Depression 28 23.43 (8.74) 20.61 (8.05) 2.367 .025 .32 13 24.92 (7.54) 21.46 (6.94) 2.843 .015 .56
 Somatic complaints 28 7.75 (4.49) 7.04 (3.84) 1.285 .210   13 6.15 (3.87) 5.69 (2.02) .496 .629  
 Anxiety 28 7.96 (2.47) 7.62 (2.38) 1.104 .280   11 7.00 (2.53) 7.45 (1.97) −.833 .424  
 General stress 28 7.75 (3.05) 7.50 (3.67) .500 .621   13 6.46 (3.13) 7.23 (4.79) −.784 .448  
Stress coping strategies
 Adaptive strategies 27 12.32 (2.20) 12.13 (2.70) .393 .679   13 16.91 (4.08) 16.73 (4.23) .370 .718  
 Maladaptive strategies 27 13.50 (3.47) 12.79 (3.51) 1.522 .140   13 19.23 (3.94) 16.69 (4.52) 2.449 .031 .48
Quality of life
 Physical condition 28 2.95 (.58) 3.27 (.57) −2.848 .008 .38 13 2.78 (.89) 2.98 (.66) −1.099 .294  
 Cognitive emotional condition 28 2.82 (.58) 2.94 (.56) −1.246 .223   13 2.89 (.66) 2.98 (.59) −.574 .577  
 Quality of life 28 3.15 (.56) 3.29 (.55) −1.487 .149   13 3.04 (.53) 3.18 (.56) −1.067 .307  
  1. Bold characters indicate significant results (p < .05)