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. 2020 Dec 3;11:570164. doi: 10.3389/fpsyt.2020.570164

Table 3.

Children's patterns of use of screens, daily physical activity, and hours of sleep before and during the quarantine and differences across countries (parents' perceptions).

Children's activity patterns Total (n = 1,480) Italy (1) (n = 712) Spain (2) (n = 431) Portugal (3) (n = 335) Before quarantine During quarantine
Before During Before During Before During Before During Testa Effect sizeb Pair-wiseb Testa Effect sizeb Post-hocb
Use of screens [min, N (%)]
<30 306 (20.7) 44 (3) 129 (18.1) 32 (4.5) 124 (28.8) 7 (1.6) 53 (15.7) 5 (1.5) 30.02** 0.10 2 > 1;
2 > 3
58.92*** 0.14 1 > 2;
1 > 3
From 30 to 60 529 (35.7) 158 (10.7) 252 (35.4) 99 (13.9) 151 (35) 37 (8.6) 126 (37.4) 22 (6.5) 1 > 2;
1 > 3
From 60 to 90 347 (23.4) 247 (16.7) 173 (24.3) 135 (19) 89 (20.7) 73 (16.9) 85 (25.2) 39 (11.6)
From 90 to 120 162 (11) 307 (20.7) 86 (12.1) 129 (18.1) 39 (9) 85 (19.7) 37 (11) 93 (27.5) 3 > 1;
3 > 2
From 120 to 180 85 (5.7) 278 (18.8) 47 (6.6) 101 (14.2) 16 (3.7) 104 (24.2) 22 (6.5) 73 (21.7) 2 > 1
More than 180 51 (3.5) 446 (30.1) 25 (3.5) 216 (30.3) 12 (2.8) 125 (29) 14 (4.2) 105 (31.2)
Physical activity [min/day, N (%)]
<30 189 (12.8) 785 (53) 125 (17.6) 404 (56.7) 30 (7) 231 (53.6) 34 (10.1) 150 (44.5) 56.43*** 0.13 1 > 2 29.29** 0.09 1 > 3;
2 > 3
From 30 to 60 490 (33.1) 477 (32.2) 251 (35.2) 198 (27.8) 118 (27.4) 138 (32) 121 (36) 141 (41.8) 3 > 1
From 60 to 90 416 (28.1) 138 (9.3) 177 (24.9) 67 (9.4) 143 (33.2) 41 (9.5) 96 (28.5) 30 (8.9)
From 90 to 120 198 (13.4) 50 (3.4) 83 (11.7) 27 (3.9) 67 (15.5) 11 (2.6) 48 (14.2) 12 (3.6)
From 120 to 180 102 (6.9) 16 (1.1) 36 (5.1) 8 (1.1) 47 (10.9) 4 (0.9) 19 (5.6) 4 (1.2) 2 > 1;
2 > 3
More than 180 85 (5.7) 14 (1) 40 (5.5) 8 (1.1) 26 (6) 6 (1.4) 19 (5.6) 0 (0)
Hours of sleep/week [M (SD)] 9.11 (1.44) 9.51 (1.55) 8.86 (1.56) 9.22 (1.65) 9.44 (1.16) 9.66 (1.38) 9.23 (1.39) 9.91 (1.41) 91.14*** 0.06 3 > 1;
2 > 1;
2 > 3
67.31*** 0.04 2 > 1;
3 > 1
**

p < 0.01;

***

p < 0.001.

a

Cross-table (χ2) for categorical variables and Kruskal-Wallis (χ2) for continuous variables.

b

Cramer's V for multi-categorical variables and Epsilon-squared for continuous variables. Bonferroni correction applied to p-values was used to reduce the risk of type I errors post-hoc analysis of a Chi-squared test.