This study investigated the associations between the intensity of mobile phone use and health-related lifestyle. For 275 university students, we evaluated health-related lifestyle using the Health Practice Index (HPI; Hagihara & Morimoto, 1991; Kusaka, Kondou, & Morimoto, 1992) and analyzed responses to a questionnaire (MPDQ; Toda, Monden, Kubo, & Morimoto, 2004) designed, with a self-rating scale, to gauge mobile phone dependence. For males, there was a significant relationship between smoking habits and mobile phone dependence. We also found that male respondents with low HPI scores were significantly higher for mobile phone dependence. These findings suggest that, particularly for males, the intensity of mobile phone use may be related to healthy lifestyle.

These findings suggest that the CPDQ is a useful scale for rating cellular phone dependence.

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