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Table 2 Relationship between sleep quality and drug use

From: Exploring the relationship of sleep quality with drug use and substance abuse among university students: a cross-cultural study

Sleep quality Levels of DAST-10
No problems Low level Moderate Substantial Severe
Very good 165 71 19 4 0
Good 256 130 49 6 3
Bad 80 55 14 8 1
Very bad 31 19 16 5 3
Total 532 275 98 23 7
X2 = 45.984 P = 0.000
Sleep quality and total score of DAST-10: R = 0.188** P = 0.000
Total of PSQI and total score of DAST-10: R = 0.247** P = 0.000
  1. **Correlation is significant at the 0.01 level (2 tailed)