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. 2020 Jun 16;20:948. doi: 10.1186/s12889-020-09087-5

Table 3.

Practice of using face mask between adults in different gender and age groups

Practice of using face mask Gender Age group
Male Female U 18–24 25–34 35–44 45–54 55–64 65–74 >  75 χ2
Mean rank Mean rank
1. When taking care of family members with fever. (n = 1362) a 646.86 711.66 208,817.00** 702.03 703.46 705.76 661.54 619.15 679.42 718.11 9.52
2. When taking care of family members with respiratory infection. (n = 1370) a 652.74 713.80 212,563.00** 767.86 703.92 698.49 660.94 649.02 660.26 666.93 11.12
3. When visiting clinics during peak season or a flu pandemic. (n = 1478) a 675.81 796.03 227,830.00*** 813.13 739.32 735.94 756.27 692.17 654.24 780.63 14.46* b
4. When visiting hospitals during peak season or a flu pandemic. (n = 1463) a 665.20 791.13 220,667.50*** 811.35 738.37 711.45 745.39 700.75 670.04 744.97 11.43
5. When having respiratory symptoms. (n = 1463) a 656.12 817.95 214,101.00*** 850.11 731.82 776.83 746.45 669.18 690.79 715.88 27.75***c

*p < 0.05, **p < 0.01, ***p < 0.001

aParticipants who reported “Not Applicable” were excluded

bPost hoc analysis using Bonferroni-Dunn test revealed a non-significant result

cPost hoc analysis using Bonferroni-Dunn test revealed a significant difference in practice between participants in “18–24 years old” and “55–64 years old”