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. 2021 Sep 1;66:1604219. doi: 10.3389/ijph.2021.1604219

TABLE 3.

Odds ratiosa (95% CI) of worse mental health and wellbeingb after the first lockdown and school reopening compared to before the pandemic among 9–12 year old girls, Canada, 2018–2020.

MHW score Self-perception Social perception Internalizing and functioning problems
OR (95% CI) OR (95% CI) OR (95% CI) OR (95% CI)
Year
 2018 1 1 1 1
 2020 1.05 (0.82, 1.33) 0.94 (0.78, 1.13) 1.09 (0.91, 1.31) 1.15 (0.96, 1.37)
Grade
 Grade 4 1 1 1 1
 Grade 5 2.05 (0.96, 4.66) 1.85 (1.12, 3.09) 0.97 (0.60, 1.56) 1.36 (0.85, 2.18)
 Grade 6 3.99 (1.99, 8.75) 2.61 (1.61, 4.29) 0.68 (0.48, 1.08) 1.33 (0.84, 2.11)
Region of residence
 Rural 1 1 1 1
 Small PC 0.86 (0.39, 1.95) 2.12 (1.14, 4.02) 1.80 (0.99, 3.31) 0.94 (0.52, 1.71)
Social deprivation
 Lower 1 1 1 1
 Higher 1.31 (0.73, 2.42) 0.72 (0.45, 1.15) 0.76 (0.48, 1.20) 0.93 (0.60, 1.47)
Material deprivation
 Lower 1 1 1 1
 Higher 0.78 (0.30, 1.97) 1.53 (0.77, 3.05) 2.92 (1.50, 5.77) 0.92 (0.48, 1.76)

CI, confidence interval; MHW, mental health and wellbeing; OR, odds ratio; PC, population centre.

a

Odds Ratios from multivariable logistic regression model and adjusted for grade level, social and material deprivation quintiles.

b

Defined as score ranging from −12 to 0 (inclusive), or factor scores <0.