Odds ratios for probability of screen contact for different mesh sizes when compared to the no mesh treatment at 0.1 m.sec−1.

*The odds ratio is the increase or decrease in the probability of contact when compared to the ‘no mesh’ treatment. For example, at 10 mm mesh size the probability of screen contact is 1÷0.62 = 1.61. Therefore contact is 61% less likely using the 10 mm mesh than the ‘no mesh’ treatment, however this was non-significantly (ns) different than a 1∶1 ratio at the p = 0.05 level.