Internet Addiction and Sleep Disorders among Medical Students

Table 3

Correlations between dimensions of sleep quality and Internet addiction.

Dimensions	1	2	3	4	5	6	7	8	9
(1) Internet addiction	1
(2) Subjective sleep quality	0.191	1
(3) Sleep latency	0.129	0.399	1
(4) Sleep duration	0.119	0.218	0.105	1
(5) Habitual sleep efficiency	0.186	0.218	0.189	0.296	1
(6) Sleep disturbances	0.169	0.436	0.279	0.028	0.163	1
(7) Use of sleeping medication	0.203	0.391	0.194	0.134	0.164	0.309	1
(8) Daytime dysfunction	0.188	0.532	0.252	0.076	0.187	0.382	0.354	1
(9) Global PSQI index	0.291	0.771	0.628	0.351	0.429	0.550	0.481	0.622	1

Significant at 0.01 (2-tailed). Significant at 0.05 (2-tailed).