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Table 1 Sample characteristics of SWIS and WLC

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

N all SWIS WLC SWIS vs. WLC
56 41 15  
Gender     X2gender(N = 56) = 1.981, p = .202
women 38 (68%) 30 (73%) 8 (64%)  
men 18 (32%) 11 (27%) 7 (36%)  
Age     Zage = −1.471, p = .141
mean 25.84 25.13 27.73  
SD 5.06 3.82 7.26