Table 4.
Fit factor comparisons for exercises and total scores between surgical and other masks versus FFP3 filtering respirators.
| Surgical and other masks (n = 78) | FFP3 filtering respirators (n = 78) | Surgical vs FFP3 filtering respirators* | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | SD | Median | 95% CI limits | Mean | SD | Median | 95% CI limits | t (77) | P | d | |||
| Lower | Upper | Lower | Upper | ||||||||||
| Exercise 1 | 5.3 | 17.5 | 2.1 | 1.4 | 9.2 | 101.7 | 157.0 | 42.0 | 66.9 | 136.6 | -5.381 | <0.001 | 0.61 |
| Exercise 2 | 4.7 | 11.7 | 2.2 | 2.1 | 7.3 | 82.1 | 100.1 | 46.0 | 59.9 | 104.3 | -6.783 | <0.001 | 0.77 |
| Exercise 3 | 4.4 | 11.6 | 2.1 | 1.8 | 7.0 | 78.4 | 85.5 | 51.5 | 59.4 | 97.3 | -7.492 | <0.001 | 0.85 |
| Exercise 4 | 3.9 | 9.1 | 2.1 | 1.9 | 5.9 | 70.4 | 78.5 | 42.0 | 53.0 | 87.8 | -7.402 | <0.001 | 0.84 |
| Exercise 5 | 5.9 | 17.1 | 2.7 | 2.1 | 9.7 | 54.0 | 45.5 | 39.0 | 43.9 | 64.1 | -8.633 | <0.001 | 0.98 |
| Exercise 6 | 2.6 | 2.3 | 2.0 | 2.1 | 3.1 | 29.1 | 33.6 | 16.5 | 21.6 | 36.6 | -7.070 | <0.001 | 0.81 |
| Exercise 7 | 2.8 | 4.3 | 1.9 | 1.9 | 3.8 | 38.7 | 39.8 | 24.5 | 29.9 | 47.6 | -7.960 | <0.001 | 0.91 |
| Exercise 8 | 3.5 | 7.7 | 2.0 | 1.8 | 5.2 | 69.6 | 86.5 | 47.0 | 50.4 | 88.8 | -6.739 | <0.001 | 0.77 |
| Total score | 3.2 | 5.0 | 2.1 | 2.1 | 4.3 | 40.7 | 37.8 | 28.5 | 32.3 | 49.1 | -8.733 | <0.001 | 1.00 |
Abbreviations: CI, confidence interval; FFP, filtering face pieces; SD, standard deviation; t, Student t statistic for a 95% CI (degrees of freedom); d, Cohen d statistic for effect size. *Student t test for related samples were applied for a P < 0.05 as statistically significant for a 95% CI.