Results : For every point increase in knowledge , the odds of participation in purchasing more goods ( OR = 0 . 88 , 95 % CI : 0 . 81 - 0 . 95 ) , attending large gatherings ( OR = 0 . 87 , 95 % CI : 0 . 81 - 0 . 93 ) , and using medical masks ( OR = 0 . 56 , 95 % CI : 0 .