[An investigation on the prevalence of internet addiction disorder in middle school students of Hunan province].

Objective: To study the prevalence of internet addiction disorder (IAD) in middle school students of Hunan and to explore its risk factors.

Methods: 5760 middle school students and their parents were sampled at random in Hunan province using two-stage sampling (stratified sampling and cluster sampling) method. The ten-item diagnosis tool for IAD, self-rating depression scale, self-rating anxiety scale, interpersonal sensitivity subscale of symptom checklist, family assessment device, parenting locus of control scale, and self-developed questionnaire were employed together to gather related data.

[Development and evaluation of quality of life scale for patients with type 2 diabetes mellitus].

Objective: To develop a specific quality of life scale for Chinese Type 2 diabetes mellitus (DM) patients.

Methods: According to the quality of life definition of WHO, we used methods adhered to the rigorous guidelines of instrument development in item pool formation, item selection and scale validation with the data of 236 Type 2 diabetic patients recruited.

Results: An 87-item Quality of Life Scale for patients with Type 2 DM-prior test version ( DMQLS), including 5 domains ( disease, physical, social, psychological, and satisfaction ) was developed and showed good reliability and validity.