感染可能性

感染可控性

感染严重性

N

M ± SD

t

M ± SD

t

M ± SD

t

285

7.5228 ± 2.96761

−2.58**

9.5018 ± 2.52679

−2.326**

9.2667 ± 2.92496

−1.165**

391

8.0767 ± 2.43779

9.9182 ± 1.94236

9.5038 ± 2.11451