Objective The objective of this work is to compare posttraumatic stress symptoms (PTSS) between families of children on cancer treatment and families of healthy children in China and to analyse the association among child PTSS, parent PTSS, and depression in the cancer group. Methods Participants were children on cancer treatment (n = 91) and their parents (n = 91), and healthy children (n = 114) and their parents (n = 96). The children were asked to self‐report PTSS, and the parents completed self‐reported measures of PTSS and depression. Results Although the prevalence of probable PTSD in children on cancer treatment was higher than that in comparisons (8.79% vs. 0.88%, P < 0.01), no statistic differences in PTSS levels were found between the two groups (P > 0.05). However, significant differences in PTSS levels and the prevalence of severe PTSS (21.98% vs. 1.04%) between parents of children with cancer and comparisons were observed (P < 0.001). Parent PTSS and depression were positively associated with child PTSS in the cancer group (P < 0.01). Conclusion The prevalence of probable PTSD in Chinese children with cancer was low, but PTSS was remarkably prevalent in their parents. Greater parent PTSS and depression were related to greater child PTSS. Results underline the importance to provide supportive psychological care for Chinese parents of children undergoing cancer treatment.
Object detection is one of the key tasks in an automatic driving system. Aiming to solve the problem of object detection, which cannot meet the detection speed and detection accuracy at the same time, a real-time object detection algorithm (MobileYOLO) is proposed based on YOLOv4. Firstly, the feature extraction network is replaced by introducing the MobileNetv2 network to reduce the number of model parameters; then, part of the standard convolution is replaced by depthwise separable convolution in PAnet and the head network to further reduce the number of model parameters. Finally, by introducing an improved lightweight channel attention modul—Efficient Channel Attention (ECA)—to improve the feature expression ability during feature fusion. The Single-Stage Headless (SSH) context module is introduced to the small object detection branch to increase the receptive field. The experimental results show that the improved algorithm has an accuracy rate of 90.7% on the KITTI data set. Compared with YOLOv4, the parameters of the proposed MobileYOLO model are reduced by 52.11 M, the model size is reduced to one-fifth, and the detection speed is increased by 70%.
Background With increasing cancer incidence and decreasing cancer mortality, there is a growing need for a valid and culturally adapted tool to measure health-related quality of life in children with cancer. This study validated the DISABKIDS Chronic Generic Module (DCGM-37) in Chinese children and adolescents with cancer. Methods The DCGM-37 was translated and adapted for use in China following the guidelines from its copyright holders. In total, 140 children and adolescents with cancer and their guardians were included in this cross-sectional study. Internal consistency and test-retest reliability were evaluated. Convergent validity was examined using Pearson correlation between the DCGM-37 and the PedsQL 4.0 Generic Core Scale. Dimensionality was clarified using exploratory factor analysis. Discriminant validity was evaluated by comparing DCGM-37 scores by sex, age, family income, and clinical characteristics. Results Internal consistency (Cronbach’s alpha 0.91) and test–retest reliability were good (intraclass correlation coefficient 0.87, 95% confidence interval 0.73–0.94). Strong correlations between the DCGM-37 and the PedsQL 4.0 (r = 0.83) suggest good convergent validity. Six factors explained 51.94% of the total variance. Children with leukemia scored higher than those with sarcoma in all subscales (effect size ranged from 0.39 to 0.83), especially the “social exclusion” subscales (effect size 0.83). Small to moderate differences (effect size ranged from 0.38 to 0.58) were observed by sex, age, and family income. Neither floor nor ceiling effects were observed. Conclusion The DCGM-37 is reliable and valid for measuring health-related quality of life in Chinese children and adolescents with cancer.
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