Adolescence is the peak period of non-suicidal self-injury (NSSI) behaviour, and it is also a period when the prevention and intervention in NSSI are frequently required. To explore the relationship between catastrophising and NSSI and its mechanism, the mediating effects of parental support and negative emotions on catastrophising and NSSI were analysed. A questionnaire was administered to 401 middle school students with a history of NSSI behaviour from 12 schools in Guangxi. (1) Adolescents’ catastrophising tendencies positively predicted their NSSI status through negative emotions (B = 0.274, P < 0.001). The more severe the adolescents’ catastrophising tendency, the more likely they were to have stronger negative emotions and thus show an increased NSSI level. (2) Parental support played a positive moderating role between the tendency to catastrophise and negative emotions (B = −0.101, t = −2.694, P < 0.01), and it had a protective effect on adolescents’ NSSI. Catastrophising was less likely to induce the NSSI behaviour by reducing adolescents’ negative emotions (B = −0.104, t = −2.313, P < 0.05); however, it should be noted that only parental affective support, informative support, and instrumental support played a significant mediating role. Parental support of adolescents has positive effects on the tendency to catastrophise, negative emotions, and NSSI, and it has some implications for the prevention and intervention of adolescents’ NSSI.

Purpose To explore the relationship between adolescents’ emotion regulation ability and non-suicidal self-injury (NSSI) behavior and the role of sleep, exercise, and social support in this relationship. Methods A total of 2573 adolescents were investigated with the Cognitive Emotion Regulation Scale, the Social Support Scale for Children and Adolescents, the Ottawa Self-Injury Questionnaire, and the Self-Made Living Condition Questionnaire, and path analysis was conducted based on the structural equation model (SEM). Results 1) There was a significant correlation between emotion regulation ability and NSSI behavior; 2) sleep and social support played a mediating role between emotion regulation ability and NSSI behavior; and 3) sleep modulated the direct effect of negative emotion regulation ability on NSSI, while exercise modulated the direct effect of positive emotion regulation ability on NSSI, which indicated that sleep and exercise could effectively alleviate NSSI behavior caused by the lack of emotion regulation in adolescents.

This study analyzed the factors influencing adolescents' non-suicidal self-injury (NSSI) behavior and their interrelationships, and established a total influencing factor model. Through a literature analysis and semi-structured interviews with 87 adolescents and 27 experts in Guangxi Province, China, 13 influencing factors were identified from six aspects: physiological factors, cognitive factors, emotional factors, social support factors, social environment, and NSSI behavior. A system of factors influencing adolescents' NSSI behavior and a model of the factors influencing the comprehensive antagonism multilevel explanatory structure were obtained using a combination of Decision-Making Trial and Evaluation Laboratory technique and Total Adversarial Interpretive Structural Model. In descending order, NSSI, emotional state, self-efficacy, and self-cognition influenced adolescents' NSSI behavior. Social environment, exercise, and recreation had a greater impact on other factors, while NSSI, emotional regulation ability, and emotional state were greatly affected by other factors. Emotion regulation ability, self-cognition, self-efficacy, family support, school support, social support, and sleep were found to be the core factors influencing NSSI behavior of adolescents. These factors could be used to directly intervene in adolescent NSSI behavior. Timely treatment of adolescents' negative emotional states is directly conducive to preventing NSSI behavior and alleviating its severity.

Purpose This study explore the interaction between loneliness and non-suicidal self-injury behaviors (hereinafter “NSSI”), and to further examine the mediating role of self-control and the moderating role of social connection. Methods A total of 414 junior high school students (age 14.05±0.84) in Sichuan province in China were investigated on their loneliness, self-control, social connection and NSSI by questionnaire. Results (1) there was a significant positive correlation between loneliness and NSSI; (2) self-control played a mediating role in the relationship between loneliness and NSSI; and (3) after controlling for gender, family structure, and family economic level, the social connectedness played a moderating role in the relationship between loneliness and NSSI, as well as between self-control and NSSI. Conclusion The results verify the relationship between loneliness and NSSI, expands and deepens the internal logical relationship between them, and provides a reference that can be used in the future for the prevention and intervention of NSSI in adolescents.

Objective To evaluate the effects of a video-assisted education intervention on informed consent and patient education for peripherally inserted central catheters (PICCs). Methods We conducted a randomized controlled trial comparing the effects on informed consent of video-assisted patient education and traditional face-to-face discussion in a catheter outpatient ward of a cancer centre in Guangzhou, China, in 2018. Participants were 140 patients randomly allocated (1:1 ratio) to two groups: video-assisted or traditional intervention. General information, patient retention of PICC-related information, working time spent by nurses on the procedure, and patient and nurse satisfaction with the procedure were assessed. Results The time used for informed consent was significantly shorter in the experimental group (1.02 ± 0.24 minutes) than in the control group (6.87 ± 1.10 minutes). The time used for PICC-related education was significantly shorter in the experimental group (1.03 ± 0.28 minutes) than in the control group (5.11 ± 0.57 minutes). Nurses’ degree of satisfaction with the procedure was significantly higher in the experimental group (4.10 ± 0.57) than in the control group (2.60 ± 0.70). Conclusion The use of video-assisted informed consent and patient education in this cancer centre decreased nurses’ working time and improved nurses’ satisfaction. Clinical trial registration number: ChiCTR1800015664