Table 2.
Summary statistics and the within-group comparisons between the volunteers with medical masks and cotton masks.
| Medical mask | Cotton mask | Paired t-test |
|
|---|---|---|---|
| p-Value | |||
| Gender, no. Male Female |
102 109 |
102 109 |
– |
| Age, year Mean ± SD Range |
41.4 ± 2.4 35–59 |
41.4 ± 2.4 35–59 |
0.99 |
| BMI, kg/m2 Mean ± SD Range |
27.2 ± 2.8 24.2–30.1 |
27.2 ± 2.8 24.2–30.1 |
0.99 |
| In-room cough/sneeze counts per hour Mean ± SD Range |
16.3 ± 1.2 10–22 |
17.9 ± 1.2 11–23 |
0.76 |
| In-room NC0.02–1, particles/cm3 Mean ± SD Range |
53,423 ± 17,525 23,219-83,195 |
55,877 ± 18,210 20,144-78,005 |
0.25 |
| In-room temperature, °C Mean ± SD Range |
25.4 ± 2.0 24.1–26.5 |
25.3 ± 2.2 23.8–26.4 |
0.82 |
| In-room relative humidity, % Mean ± SD Range |
74.1 ± 1.5 69.2–76.5 |
74.5 ± 1.6 68.4–74.3 |
0.67 |
| In-car cough/sneeze counts per hour Mean ± SD Range |
17.6 ± 2.2 14–22 |
18.3 ± 2.5 15–23 |
0.75 |
| In-car NC0.02–1, particles/cm3 Mean ± SD Range |
25,733 ± 9210 13,045-69,162 |
26,453 ± 9833 12,146-70,698 |
0.43 |
| In-car temperature, °C Mean ± SD Range |
24.2 ± 1.8 23.1–25.1 |
24.3 ± 1.7 23.1–25.2 |
0.84 |
| In-car relative humidity, % Mean ± SD Range |
77.2 ± 2.1 61.1–0.78.4 |
77.9 ± 2.2 65.3–79.5 |
0.81 |