Table 3.
Decontamination efficacy of peracetic acid‐based disinfectants under different conditions and its comparison with products containing hydrogen peroxide or sodium hypochlorite
| Group | N | Positive | Negative | Negative proportion (%) (95% CI)* | Test | P value |
|---|---|---|---|---|---|---|
| A | 49 | 29 | 20 | 40·8 (27·0–55·8) | – | – |
| B | 100 | 5 | 95 | 95·0 (88·7–98·4) | A < B | <0·001 |
| C | 50 | 24 | 26 | 52·0 (37·4–66·3) | A < C | 0·132 |
| D | 50 | 13 | 37 | 74·0 (59·7–85·4) | – | – |
| E | 50 | 4 | 46 | 92·0 (80·8–97·8) | D < E | 0·017 † |
| F | 50 | 2 | 48 | 96·0 (86·3–99·5) | E < F | 0·339 ‡ |
| G | 100 | 6 | 94 | 94·0 (87·4–97·8) | – | – |
| H | 25 | 21 | 4 | 16·0 (4·5–36·1) | H < G | <0·001 |
| I | 25 | 25 | 0 | 0·0 (0·0–13·7) | I < G | <0·001 |
| J | 25 | 25 | 0 | 0·0 (0·0–13·7) | J < G | <0·001 |
| K | 50 | 2 | 48 | 96·0 (86·3–99·5) | K < G | 0·551 † |
| L | 25 | 1 | 24 | 96·0 (79·6–99·9) | L < G | 0·500 † |
| M | 24 | 0 | 24 | 100·0 (85·8–100·0) | M < G | 0·758 † |
| N | 23 | 7 | 16 | 69·6 (47·1–86·8) | N < O | 0·015 † |
| O | 59 | 5 | 54 | 91·5 (81·3–97·2) | O < G | 0·393 † |
*
Used 95% Clopper–Pearson’s confidence interval.
†
Used Yates’s continuity correction.
‡
Fisher’s exact test.