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Meng J, Wang F, Chen R, Hua H, Yang Q, Yang D, Wang N, Li X, Ma F, Huang L, Zou Z, Li M, Wang T, Luo Y, Li Y, Liu Y. Association between the pattern of mobile phone use and sleep quality in Northeast China college students. Sleep Breath 2021; 25:2259-2267. [PMID: 33532989 DOI: 10.1007/s11325-021-02295-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 12/09/2020] [Accepted: 01/05/2021] [Indexed: 10/22/2022]
Abstract
OBJECTIVES Currently, mobile penetration is high amongst college students. The aims of this study were to investigate the characteristics of mobile phone use and to explore the influence of mobile phone use characteristics on sleep quality amongst college students. METHODS From December 2016 to January 2017, we collected mobile phone use characteristics and sleep quality data using the Pittsburgh Sleep Quality Index (PSQI) and standardised questionnaires that were answered by 4500 medical university students in Liaoning Province (actual response rate of 94%, n = 4234 college students). This study used the SPSS 21.0 software to establish the database and perform the statistical analysis. RESULTS One hundred percent of the college students had mobile phones and used mobile phones for entertainment (91%), work (51%), obtaining information (61%), and other purposes (23%). Additionally, there was a statistically significant difference in the PSQI score between students who held the phone at a distance of more than 10 cm from their eyes and those who held it a distance of less than 10 cm (P = 0.002). Multiple logistic regression analysis showed that the risk of poor sleep quality was 1.21-1.53 times higher for those who spent more than 5 h a day using their phones and 1.41-1.59 times higher for those who used their phones for more than half an hour before going to bed when the lights were off. CONCLUSIONS Daily cumulative mobile phone use and use with the lights off before sleep are associated with poorer sleep quality.
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Affiliation(s)
- Jia Meng
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122, Liaoning, China
- School of Public Health, Jinzhou Medical University, Jinzhou, Liaoning, China
| | - Fang Wang
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122, Liaoning, China
| | - Rentong Chen
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122, Liaoning, China
| | - Hui Hua
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122, Liaoning, China
| | - Qian Yang
- Department of Personnel, Jinzhou Medical University, Jinzhou, Liaoning, China
| | - Dan Yang
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122, Liaoning, China
| | - Nan Wang
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122, Liaoning, China
| | - Xin Li
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122, Liaoning, China
| | - Fangfang Ma
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122, Liaoning, China
| | - Liting Huang
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122, Liaoning, China
| | - Zhenzhen Zou
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122, Liaoning, China
| | - Menglin Li
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122, Liaoning, China
| | - Tieting Wang
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122, Liaoning, China
| | - Yannan Luo
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122, Liaoning, China
| | - Yunda Li
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122, Liaoning, China
| | - Yang Liu
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122, Liaoning, China.
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Soler F, Sánchez-García A, Molina-Martin A, de Fez D, Díaz V, Piñero DP. Differences in Visual Working and Mobile Phone Usage Distance according to the Job Profile. Curr Eye Res 2021; 46:1240-1246. [PMID: 33406917 DOI: 10.1080/02713683.2020.1867751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
PURPOSE To analyze and characterize the pattern of visual working distance (WD) and mobile phone usage distance (MPD) in a large population, analyzing the differences in these parameters according to the job profile. METHODS Cross-sectional study consisting of a screening campaign evaluating the visual status of professionals from seven different environments. A total of 454 participants with a mean age of 41.5 years (range, 22-64 years) were revised. The screening campaign consisted of several rapid tests performed in a single session in the usual work environment of each participant, including measurement of WD, arm length, and MPD (VisionApp, VisionApp Solutions S.L.). RESULTS WD was significantly longer than MPD (82.5 ± 150.6 vs. 31.9 ± 6.3 cm, p < .001), whereas no significant differences were found between arm length (74.3 ± 4.8 cm) and WD (p = .493). WD was below 80 cm in 89.6% (407/454) of participants, whereas MPD was below 40 cm in 89.0% (404/454). No significant correlation was found between WD and MPD (r = 0.126, p = .117). Statistically significant differences were detected among job profile subgroups in WD (p < .001), with military personnel showing significantly longer WD than other professionals (p ≤ 0.018). Significant differences were also found between job profile subgroups in MPD (p = .006), with shorter MPDs for shoe factory professionals compared to sellers (p = .046). CONCLUSIONS WD and MPD vary significantly among individuals, but always showing a shorter MPD. WD varies significantly also according to the job profile, being necessary to consider this information when selecting the most optimal optical aid in each case, especially for the compensation of presbyopia.
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Affiliation(s)
- Fernando Soler
- Innova Ocular Clinica Dr Soler, Alicante, Spain.,Fundación Dr Soler de la Comunidad Valenciana, Alicante, Spain
| | - Alicia Sánchez-García
- Department of Optics, Pharmacology and Anatomy, University of Alicante, Alicante, Spain
| | - Ainhoa Molina-Martin
- Department of Optics, Pharmacology and Anatomy, University of Alicante, Alicante, Spain
| | - Dolores de Fez
- Department of Optics, Pharmacology and Anatomy, University of Alicante, Alicante, Spain
| | - Valentín Díaz
- Innova Ocular Clinica Dr Soler, Alicante, Spain.,Fundación Dr Soler de la Comunidad Valenciana, Alicante, Spain
| | - David P Piñero
- Department of Optics, Pharmacology and Anatomy, University of Alicante, Alicante, Spain
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