Fig. 6

Demographic characteristics of individuals by risk behaviors. Females were more likely to have some degree of workspace exposure to a positive case during working hours compared to males (chi sq test, p < 0.001, OR 8.318, 95% CI 2.891–22.87) (A) and were significantly more likely to eat/socialize together with no protective measures (p < 0.001, OR 6.99, 95% CI 2.389–19.05) (B). In contrast, males were more likely to share items/meals/clothing/ with one another (p = 0.018, OR 3.314, 95% CI 1.245–8.66) (C) in the study cohort. Moreover, having an education level of Ordinary Level examination or above was associated with being more likely to have face to face contact with no mask for > 15 min (p = 0.029, OR 3.287,95% CI 1.074–10.28) (D)