Table 3.
Comparison of the use of the intervention between groups
| Total (N= 275), median, IQR | Face shield + surgical face mask group (N= 135), median, IQR | Surgical face mask group (N= 140), median, IQR | p-value | |
|---|---|---|---|---|
| Mobility | ||||
| Number of working days during the follow-up period | 12 (9–15) | 12 (8–15) | 13 (9–15) | 0.46ª |
| PPE adherence | ||||
| Average number of days of use of assigned PPE | 15 (12–17) | 14 (11–17) | 15 (13–18) | < 0.001ª |
| Average number of hours of use of the assigned PPE per day | 6 (4.3–8) | 5 (4–6.7) | 7.3 (5.3–8.7) | < 0.001ª |
| Average number of hours of use of face mask only per day | 6 (4–8) | 5.5 (4–8) | 7.3 (5.3–8.7) | < 0.001ª |
| n(%) | n(%) | n(%) | ||
| Adherence use of the intervention | < 0.001b | |||
| High | 161 (58.5) | 37 (27.4) | 124 (88.6) | |
| Medium-high | 78 (28.4) | 63 (46.7) | 15 (10.7) | |
| Medium | 7 (2.5) | 7 (5.2) | 0 (0) | |
| Medium-low | 21 (7.6) | 20 (14.8) | 1 (0.7) | |
| Low | 8 (2.9) | 8 (5.9) | 0 (0) | |
Medians and % were calculated based on the participants who provided complete information during the three follow-up calls. Six participants (4.2%) are missing values among the intervention group, and two (1.4%) are missing values among the active control group
IQR interquartile range, PPE personal protective equipment
ap-value calculated with the Mann–Whitney U non-parametric test
bp-value calculated with the Fisher's exact test