Table 5 Odds ratios conditional to the participants’ age group, base percentage, age group additional effect, and cumulative effect in brackets.

From: Assessing the perceived effect of non-pharmaceutical interventions on SARS-Cov-2 transmission risk: an experimental study in Europe

NPI attribute

Base percentages

Age 18–24

Age 25–34

Age 35–44

Age 45–54

Age 55–64

Face mask [yes]

 − 32%***

 + 1%*** (− 31%)

 − 0.001%n.s.

 − 3%*** (− 35%)

 − 4%*** (− 28%)

 + 1%*** (− 31%)

Duration [15 min]

 − 3%**

 + 0.03%n.s.

 + 0.02%n.s.

 + 0.001%n.s.

 + 0.02%n.s.

 − 0.004%n.s.

Distance [about 1 m]

 + 8%***

 + 0.05%n.s.

 − 0.001%n.s.

 + 0.001%n.s.

 − 0.01%n.s.

 + 0.03%n.s.

Environment [outdoors, open air]

 − 34%***

 + 10%*** (− 24%)

 + 4%*** (− 30%)

 − 0.007%n.s.

 − 4%*** (− 38%)

 − 11%*** (− 45%)

People [2 people]

 − 11%***

 + 0.03%n.s.

 + 0.009%n.s.

 + 0.001%n.s.

 − 0.006%n.s.

 + 0.03%n.s.

  1. ***p < 0.000, **p < 0.001, *p < 0.05, n.s.p > 0.05.