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. 2023 Jan 10;17:e383. doi: 10.1017/dmp.2023.10

Table 1.

The participating youths’ study patterns before, during, and after COVID-19 lockdown by sex and educational level

Percentage
High school students Undergraduate students Graduate students All
Variable Male
(n = 678)
Female
(n = 2146)
Total
(n = 2824)
Male
(n = 2106)
Female
(n = 4918)
Total
(n = 7024)
Male
(n = 68)
Female
(n = 166)
Total
(n = 234)
Grand total
(n = 10082)
Average study time (hours/day)
Before lockdown (reference group for ‘During lockdown’ and ‘After lockdown’)
  <1h 22.9 24.5 24.1 21.3 23.7 23.0 17.7 14.5 15.4 23.1
  1 - 4h 47.3 42.4 43.5 44.9 43.8 44.1 26.5 33.1 31.2 43.7
  5 - 8h 23.0 25.6 25.0 26.4 25.8 26.0 32.3 40.4 38.0 26.0
  > 8h 6.8 7.5 7.4 7.4 6.7 6.9 23.5 12.0 15.4 7.2
During lockdown
  <1h 22.3 17.9*** 18.9*** 19.5* 21.8*** 21.1*** 25.0 20.5** 21.8** 20.5***
  1 - 4h 48.4 39.9*** 41.9*** 49.2* 50.4*** 50.1*** 30.9 46.4** 41.9 ** 47.6***
  5 - 8h 23.6 34.7*** 32.0 *** 24.5* 23.1*** 23.5 *** 27.9 27.1** 27.3 ** 26.0***
  >8h 5.7 7.5*** 7.1 *** 6.8* 4.7*** 5.3 *** 16.2 6.0** 9.0 ** 5.9***
After lockdown
  <1h 12.8 9.2*** 10.1 *** 11.6* 6.5*** 8.0 *** 17.6 13.3** 14.5 ** 8.7***
  1 - 4h 36.7 27.6*** 29.8 *** 39.3* 31.3*** 33.7 *** 22.1 46.4** 39.3 ** 32.8***
  5 - 8h 38.2 48.7*** 46.1*** 38.1* 48.1*** 45.1*** 39.7 32.5** 34.6 ** 45.1***
  >8h 12.3 14.5*** 14.0 *** 11.0* 14.2*** 13.2 *** 20.6 7.8** 11.6 ** 13.4***
Main study mode
Before lockdown (reference group for ‘During lockdown’ and ‘After lockdown’)
  In-class study 20.6 18.0 18.7 30.9 35.9 34.4 20.6 26.5 24.8 29.8
  Online study 38.8 43.2 42.1 40.4 32.7 35.0 26.5 23.5 24.4 36.7
  Self-study 40.6 38.8 39.2 28.7 31.4 30.6 52.9 50.0 50.8 33.5
During lockdown
  In-class study 1.5*** 0.3*** 0.6 *** 2.5*** 0.5*** 1.1 *** 2.9 *** 1.2 *** 1.7 *** 1.0***
  Online study 64.6*** 72.5*** 70.6 *** 71.5*** 65.8*** 67.5 *** 50.0 *** 48.2 *** 48.7 *** 68.0***
  Self-study 33.9*** 27.2*** 28.8 *** 26.0*** 33.7*** 31.4 *** 47.1 *** 50.6 *** 49.6 *** 31.0***
After lockdown
  In-class study 29.0*** 0.9*** 7.7 *** 11.3*** 5.3*** 7.1 *** 16.2*** 6.6*** 9.4 *** 7.3***
  Online study 60.5*** 86.7*** 80.4 *** 78.3*** 87.3*** 84.6 *** 42.6*** 51.2*** 48.7 *** 82.6***
  Self-study 10.5*** 12.4*** 11.9 *** 10.4*** 7.4*** 8.3 *** 41.2*** 42.2*** 41.9 *** 10.1***

*Values under a given variable were shown in bold, if the difference across educational levels (high school students, undergraduate students, graduate students) within the overall population (total) or within a given sex (male, female) was significant; shown in italic, if the difference between sexes within a given educational level was significant; and marked by asterisks, if the difference during or after COVID-19 within a given educational level and sex (relative to ‘before lockdown’) was significant (*P < 0.05, **P < 0.01, ***P < 0.001). P - values were based on χ2 tests.