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Table 4 Predictors of sleep quality (PSQI total score) and sleep disturbances (PSQI > 5) in cigarette smokers

From: Sleep quality in cigarette smokers and nonsmokers: findings from the general population in central China

  PSQI Insomnia
  B (SE) OR (95% CI)
Cigarettes per day −0.004 (0.002) ** 0.998 (0.994, 1.002)
Years Smoking 0.013 (0.004) ** 1.005 (0.999, 1.012)
Quit Attempts 0.127 (0.019) *** 1.100 (1.066, 1.135) ***
Smoking Craving 0.150 (0.017) *** 1.107 (1.077, 1.137) ***
  1. *** p < .001; ** p < .01
  2. B the unstandardized coefficients, SE standard error, OR odds ratios, CI 95% confidence intervals, BMI Body Mass Index