Average: 2.91 hrs/day
- ‘7–17’ years: 2.74 hrs/day 
- ‘18–22’ years: 3.08 hrs/day
- '23–59’ years: 2.95 hrs/day

- *no significant difference among different age group categories

University of Michigan - Ann Arbor

Time spent on online classes:
- Average: 3.20 hrs/day
- The average time spent on online classes was significantly higher for students with age group ‘7–17’ years.

Time students allot per day for self-study:
- Average: 2.91 h/day
- *no significant difference among different age group categories

Assessment of satisfaction level among students:
- satisfaction levels varied significantly with different age groups. There were 51.6% negative online class reviews from subjects in the ‘18–22’ age group, compared to 31.5% negative reviews from subjects in the ‘7–17’ age group (who spent more time online).

Medium of Online Learning:
- '7-17' years mostly used smartphones 
- '18-22' and '23-59' primarily used laptops/desktops
*There was a significant difference in time spent on online classes between the types of medium.

Results: Assessment of Online Learning

K.  Chaturvedi,  D.  K.  Vishwakarma,  and  N.  Singh,  "Children  and  Youth  Services  Review  COVID-19  and  its impact on education , social life and mental health of students : A survey," Child. Youth Serv. Rev., vol. 121, no. December 2020, p. 105866, 2021. https://doi-org.proxy.lib.umich.edu/10.1016/j.childyouth.2020.105866

COVID-19 and its impact on education, social life, and mental health of students: A Survey

Average: 3.20 hrs/day
- ‘7–17’ years: 3.69 hrs/day (significant difference)
- ‘18–22’ years: 2.98 hrs/day
- '23–59’ years: 2.66 hrs/day


Results: Time spent on Online Classes

Results: Time allotted for self-study

- Negative = 38.3%
- Average (rating) = 33.4%
- Positive = 28.4%

satisfaction levels varied significantly with different age groups. There were 51.6% negative online class reviews from subjects in the ‘18–22’ age group, compared to 31.5% negative reviews from subjects in the ‘7–17’ age group (who spent more time online).

Results: Satisfaction levels among students

Majority device used in online learning:
- '7-17' years: smartphones (57.3%)
- '18-22' years: laptop/desktop (56.4%)
- '23-59' years: laptop/desktop (57.8%)
Only 37 students (3.1%) reported using a tablet. 

There was a significant difference in time spent on online classes between the types of medium.
- Smartphone = 3.07 hours/day
- Laptop/Desktop = 3.43 hours/day
- Tablet = 4.30 hours/day

Results: Medium of Online Learning  & Time spent on each

Running fisher’s exact test indicated that the respondents who were not socially well connected and believed that they did not utilize their time in lockdown, had a significant impact on their state of health. A Chi Square test confirmed that there is an association between these variables with the different distribution of age groups.

Thus, to maintain a state of health and well-being, it is necessary to perform a certain amount of exercise daily

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