Logistic regression analysis of the associated factors for discontinuation of hypnotics using PSQI sub-item scores as explanatory variables.

<p>CI denotes confidence intervals.</p><p>ns =  not significant; PSQI =  Pittsburgh Sleep Quality Index.</p><p>Logistic regression analysis of the associated factors for discontinuation of hypnotics using PSQI sub-item scores as explanatory variables.</p

Predictive cut-off point of the Pittsburgh Sleep Quality Index for the long-term use of hypnotics estimated with the receiver operating characteristic (ROC) curve.

<p>CI denotes confidence intervals. AUC =  area under the curve.</p

Logistic regression analysis of the associated factors for the long-term use of hypnotics (n = 140).

<p>CI denotes confidence intervals.</p><p>ns =  not significant; PSQI =  Pittsburgh Sleep Quality Index; SDS =  Zung Self-Rating Depression Scale.</p><p>Logistic regression analysis of the associated factors for the long-term use of hypnotics (n = 140).</p

Comparison of demographic variables between the discontinued group and the long-term use group.

<p>Values are expressed as means ±SD. The Mann-Whitney U test was used for the comparison of continuous variables between the 2 groups as follows: age, duration of insomnia morbidity, dose of hypnotics, and SDS and PSQI scores. The chi-square test was used for the comparison of categorical variables between the 2 groups as follows: sex, marital status, educational background, occupation, and half-life of hypnotic.</p><p>ns =  not significant; SDS =  Zung Self-Rating Depression Scale; PSQI =  Pittsburgh Sleep Quality Index.</p><p>Comparison of demographic variables between the discontinued group and the long-term use group.</p

Comparison of PSQI total and sub-item scores between the baseline and the end of the treatment period, and comparison of changes in these scores between the discontinued group and the long-term use group from the baseline to the end of the treatment period.

a)<p>The Wilcoxon signed rank test was used for comparison of the scores between the 2 time points.</p>b)<p>The Mann-Whitney U test was used for comparison of the changes in these scores between the 2 groups.</p><p>Values are expressed as means ±SD for continuous variables.</p><p>*<i>p</i><0.01;</p><p>**<i>p</i><0.05; PSQI =  Pittsburgh Sleep Quality Index.</p><p>Comparison of PSQI total and sub-item scores between the baseline and the end of the treatment period, and comparison of changes in these scores between the discontinued group and the long-term use group from the baseline to the end of the treatment period.</p