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. 2020 Sep 25;22(9):e19992. doi: 10.2196/19992

Table 2.

Results of post hoc Dunn test (after Kruskal-Wallis tests) on the extracted features between prelockdown and during lockdown periods (only statistically significant differences were reported).

Features Italy Spain Denmark UK Netherlands
Homestay

z test –9.38 –8.98 –5.44 –9.19 –7.33

P value <.001 <.001 <.001 <.001 <.001
Maximum distance from home

z test 9.0 8.91 5.48 8.40 7.58

P value <.001 <.001 <.001 <.001 <.001
Steps

z test 8.23 7.72 2.57 6.82 4.78

P value <.001 <.001 .02 <.001 <.001
Maximum number of nearby devices

z test 9.68 8.16 5.06 10.2 7.73

P value <.001 <.001 <.001 <.001 <.001
Total sleep duration

z test –4.65 –5.23 a –4.24

P value <.001 <.001 <.001
Bedtime

z test –4.31 –7.23 –5.28
P value <.001 <.001 <.001
Heart rate

z test 9.94 7.61 2.68 4.18

P value <.001 <.001 .02 <.001
Unlock duration

z test –8.8 –8.57 –6.0

P value <.001 <.001 <.001
Social app use duration

z test –7.72 –2.36 –5.72 –4.98

P value <.001 <.001 <.001 <.001

aThe difference was not statistically significant.