[Relationship between mobile phone addiction and musculoskeletal disorders among secondary vocational school students in Shanghai in 2023].

OBJECTIVE

To understand the current situation of smartphone addiction and musculoskeletal disorders among students of secondary vocational schools in Shanghai, and to analyze the correlation between the two.

METHODS

A stratified random sampling method was used to select 4897 students from 10 secondary vocational schools in Shanghai between March and April 2023. Smartphone Addiction Scale and the Nordic Musculoskeletal Questionnaire were used for the survey. Descriptive statistical analyses, Pearson's chi-squared test analysis and binary logistic regression analyses were conducted for the statistical analysis of the research.

RESULTS

The overall detection rate of smartphone addiction among students in secondary vocational schools in Shanghai was 70.45%(3450 students), with 66.61%(1993 students) of boys and 76.5%(1457 students) of girls showing addiction, indicating a statistically significant difference between genders(χ2=54.14, P<0.01). The detection rates of smartphone addiction among first, second, and third-year students were 68.92%(1100 students), 71.78%(1160 students), and 70.62%(1190 students) respectively, with no statistically significant difference among different grades(χ2=3.32, P=0.19). The detection rate of smartphone addiction was 69.21%(2117 students) among only children and 72.52%(1333 students) among non-only children, showing a statistically significant difference(χ2=6.29, P=0.01). The detection rate of musculoskeletal disorders was 37.96%(1859 students), with 35.20%(1053 students) of boys and 42.30%(806 students) of girls affected, indicating a statistically significant difference between genders(χ2=25.03, P<0.01). Regarding the incidence of musculoskeletal disorders by body part, the top three were: neck(23.52%, 1152 students), lower back(19.54%, 957 students), and shoulder(16.50%, 808 students), with statistically significant differences between genders(χ2=8.77, P<0.01; χ2=46.24, P<0.01; χ~2=36.48, P<0.01). The mobile phone addiction tendency score had a significant impact on five types of musculoskeletal disorders: neck pain, shoulder pain, lower back pain, wrist pain and elbow pain. For every one-point increase in the mobile phone addiction tendency score, the incidence rates of neck pain, shoulder pain, lower back pain, wrist pain and elbow pain increased by 1.036, 1.037, 1.034, 1.045 and 1.047 times, respectively.

CONCLUSION

Smartphone addiction among vocational high school students in Shanghai significantly increases the risk of musculoskeletal disorders, including neck pain, shoulder pain, lower back pain, wrist pain, and elbow pain.