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Objective@#To explore the relationship between cyberbullying and depression in college students, and to provide a scientific basis for the prevention of cyberbullying.@*Methods@#A total of 3 914 college students from 6 universities in Shanxi Province were selected as research objects. The students’ cyberbullying behavior scale and depression self-rating scale were used to investigate the students.@*Results@#The overall reported rate of cyberbullying among college students was 17.4%. Boys who suffered from online verbal bullying and online fraud scored higher than girls. Students whose parents divorced scored higher than those whose parents did not divorce in all dimensions of cyber-bullying. There was a statistically significant difference in the overall scores of students with different degrees of education and time spent online( P <0.05). Depression was reported in 15.6% of participants. The depression scores of female students were higher than that of male students.College students whose parents were divorced had higher depression scores than those whose parents were not divorced.There were statistically significant differences in depression scores among college students with different fathers’ education levels and different time spent online every day( t / F =2.05, 6.64, 3.91 , 19.52, P <0.05). Pearson correlation analysis showed that online speech bullying, online fraud and identity concealment bullying were positively correlated with depression scores( r s =0.40, 0.36, 0.46, P <0.01). Multiple linear regression analysis showed that three forms of cyberbullying were risk factors for the increase of depression in college students( β =0.89, 0.38, 0.38, P <0.01).@*Conclusion@#Cyber-bullying is one of the risk factors for increasing the severity of depression among college students.Strengthening the management of Internet use, promotion college students’ interpersonal conununication and active cooperating between society, school and family are great significance to reduce the occurrence of cyberbullying.
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To investigate the value of injecting a small amount of absolute ethanol into the benign solid nodules of the thyroid before radiofrequency ablation(RFA)to improve the efficiency of radiofrequency ablation. A total of 98 eligible patients(98 nodules)with pathologically confirmed benign solid nodules who were treated in our center from December 2016 to February 2018 were included and randomized into ethanol ablation(EA)combined with radiofrequency ablation(RFA)group(EA+RFA group)and RFA group,with 49 patients in each group.Routine ultrasound,contrast-enhanced ultrasound(CEUS),and thyroid function test were performed before treatment and 1,3,6,and 12 months after treatment.The general information,treatment time,ablation energy,ablation power,postoperative nodule volume reduction ratio(VRR),symptom score(SS)and cosmetic score(CS),thyroid function level,and incidence of complications were compared between these two groups. The mean treatment time [(441.30±243.31)s (790.70±349.82)s;= 4.403, =0.000],mean ablation energy [(3.92±2.01)kJ (5.15±2.12)kJ;=2.709, =0.009],and mean ablation power [(6.07±1.44)W (7.30±1.29)W;=3.612, =0.006] were significantly lower in the EA+RFA group than in the RFA group.At 3,6 and 12 months after surgery,the VRR in the EA+RFA group was(57.73±11.07)%(=-3.16, <0.001),(64.40±10.56)%(=-5.45, <0.001),and(77.29±8.48)%(=-10.46, <0.001),respectively;the VRR in the RFA group was(55.44±13.01)%(=-1.76, <0.001),(65.28±11.33)%(=-5.09, <0.001),and(75.17±9.84)%(=-8.93, <0.001),which were significantly smaller than those before surgery.There was no significant difference in VRR between the EA+RFA group and the RFA group at 1(=3.41, =0.33),3(=2.05, =0.21),6(=2.77, =0.49),and 12 months(=5.05, =0.10)after treatment.During the follow-up,no recurrence of nodules was observed on CEUS.In the EA+RFA group,the SS [(1.77±0.86).(5.54±2.15);=9.63, <0.001] and the CS[(1.39±0.77).(3.32±0.61);=10.09, =0.004]at 12 months after surgery were significantly lower than those before surgery.In the RFA group,SS [(1.63±1.04).(5.90±1.79);=12.72, <0.001] and CS [(1.64±0.83).(3.15±0.72);=8.13, =0.012] at 12 months after surgery were also significantly lower than those before surgery.The CSS in the EA+RFA group was significantly lower than that in the RFA group [(0.93±0.55).(2.44±0.53);=-11.70, =0.007].Both groups had no significant change in thyroid function during the follow-up period,and no serious complications were observed. Anhydrous alcohol injection can effectively improve the efficiency of radiofrequency ablation in treating benign solid thyroid nodules and is effective in reducing nodule volume,alleviating compressive symptoms,and decreasing cosmetic discomfort.