目的 识别本科护生问题性网络使用（problematic internet use，PIU）转变模式，分析不同转变模式与非自杀性自伤(non-suicidal self-injury，NSSI)关联。方法 便利抽样选取901名本科护生为研究对象，分别于2022年9月（T1）、2023年9月（T2），采用一般资料调查表、戴维斯在线认知量表和青少年NSSI评定问卷对其进行调查。潜在类别分析识别PIU类别，潜在转变分析探讨PIU转变模式，Logistic回归探索不同转变模式与NSSI关联。结果 T1和T2时点护生PIU均有3个类别：低PIU组（26.97%/36.07%）、中PIU组(41.95%/39.96%)、高PIU组(31.08%/23.97%)。本科护生PIU整体呈缓解趋势，但13.54%护生仍维持高PIU，命名为高PIU持续组；4.44%、1.89%护生由低PIU转变为中PIU、高PIU，8.55%护生由中PIU转变为高PIU，命名为PIU进展组。进展组（OR=2.73，95%CI:1.62~4.26）及高PIU持续组（OR=3.80，95%CI:2.25~6.12）与NSSI增加有关（均P＜0.01）。结论 本科护生PIU有3个潜在类别，各类别随时间推移发生转变且对NSSI有不同影响，护理教育者应重点关注保持高PIU组和转变为更高水平PIU组护生，提供相关干预以降低NSSI。

Objective To identify the transition patterns of problematic internet use (PIU) and analyze its relationship with non-suicidal self-injury (NSSI) in nursing undergraduates.Methods A total of 901 nursing undergraduates were selected by convenience sampling method for 2 surveys in September of 2022 and 2023. General information questionnaire,Davis Online Cognition and Adolescent Non-suicidal Self-injury Assessment Questionnaire were used for investigation.Latent class analysis and latent transition analysis were used to explore the classes and transition patterns of PIU,and multivariable Logistic regression was used to analyze the association between transition patterns of PIU and NSSI.Results The undergraduates were divided into 3 latent classes at T1 and T2,namely low PIU（26.97%/36.07%）,middle PIU（41.95%/39.96%）and high PIU(31.08%/23.97%).The whole PIU showed a mitigating trend,while approximately 13.54% maintain high PIU,namely the high-level continuous group;the percentage of low PIU converted to middle PIU and high PIU were 4.44% and 1.89%,and middle PIU converted to high PIU was 8.55%,namely the progress group.Both the progress group (OR=2.73,95%CI:1.62~4.26) and high-level continuous group (OR=3.80,95%CI:2.25~6.12) had significantly higher risk in NSSI (all P＜0.01).Conclusions There are 3 latent classes of PIU that change over time and have different effects on NSSI in nursing undergraduates.Nursing educators should focus on those with high PIU and a tendency to higher PIU,thus providing relevant intervention to reduce NSSI.

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国家自然科学基金（72204065）；黑龙江省哲学社会科学研究规划基金项目(21SHC216)