Outcome measure | Clinical URTI | Laboratory confirmed URTI | ||||||
---|---|---|---|---|---|---|---|---|

Gargling (n = 256) | Control (n = 236) | Effect measure (95% CI) | P value | Gargling (n = 254) | Control (n = 235) | Effect measure (95% CI) | P value | |

Imputed URTI episodes, No. (%) | 106 (35.3) | 100 (33.3) |
^{*}RR: 1.1 (0.78-1.44)
| 0.69 | ||||

Complete case URTI episodes, No. (%) | 85 (33.2) | 65 (27.5) |
^{*}RR: 1.2 (0.92-1.57)
| 0.19 | 33 (13.0) | 37 (18.7) |
^{*}RR:0.82 (0.53-1.26)
| 0.36 |

^{€}Viral load, mean (SD)
| 6.24 (1.3) | 5.95 (1.5) | 0.43 | |||||

^{†}Symptom duration, mean days (SD)
| 6.2 (1.3) | 6.0 (1.6) |
^{*}HR: 0.85 (0.38-1.89)
| 0.69 | 5.9 (1.3) | 6.1 (1.4) |
^{*}HR: 0.43 (0.56-4.0)
| 0.43 |

^{†}Symptom severity, mean (SD)
| 225.3 (123.9) | 191.8 (105.1) | 0.13 | 210.5 (105.3) | 191.8 (98.8) | 0.49 |