TABLE 3.
Effect of soap volume on the reduction of Serratia marcescens on the hands
| Test | Soap vol
|
Treatment (no. of subjects) | Log10 count/hand (95% CI)
|
||
|---|---|---|---|---|---|
| No. of pumps | Wt (g) | Baselinea | Single-wash reduction | ||
| 1 | 1 | 1.5 | Antimicrobial (12) | 6.32 (6.10-6.54) | 3.15 (2.78-3.52)b,c |
| 0.75 | Nonantimicrobial (12) | 6.34 (6.20-6.48) | 0.25 (0.19-0.31)b | ||
| 2 | 2 | 3 | Antimicrobial (10) | 6.24 (6.01-6.47) | 3.83 (3.58-4.08)b,c,d |
| 1.5 | Nonantimicrobial (9) | 6.25 (5.94-6.56) | 0.88 (0.61-1.15)b,e | ||
| 3 | 4 | 3 | Nonantimicrobial (10) | 6.13 (5.97-6.29) | 1.08 (0.75-1.41)d,e |
a
P > 0.5 (ANOVA; antimicrobial baseline versus nonantimicrobial baseline within each test).
b
P < 0.001 (ANOVA; antimicrobial wash versus plain-soap wash within each test).
c
P < 0.001 (ANOVA; antimicrobial soap; test 1 versus test 2).
d
P < 0.001 (ANOVA; antimicrobial soap test 2 versus nonantimicrobial soap test 3).
e
P = 0.19 (ANOVA nonantimicrobial soap; test 2 versus test 3).