Number of days feeling unwell with symptoms of respiratory tract infections or sinusitis in prior month reported at 3 mo and 6 mo
| Variable | No nasal irrigation | Nasal irrigation | No steam inhalation | Steam inhalation |
|---|---|---|---|---|
| RTI symptoms* | ||||
| Days unwell at 3 mo, median (IQR) | 2 (0 to 7) | 1 (0 to 7) | 2 (0 to 7) | 2 (0 to 8) |
| Univariate RR (95% CI) | 1.00 | 0.93 (0.76, 1.14) | 1.00 | 1.06 (0.86 to 1.29) |
| Adjusted RR (95% CI) | 1.00 | 0.95 (0.77 to 1.16) | 1.00 | 1.10 (0.89 to 1.35) |
| Days unwell at 6 mo, median (IQR) | 3 (0 to 8) | 2 (0 to 7) | 2 (0 to 7) | 2 (0 to 8) |
| Univariate RR (95% CI) | 1.00 | 0.96 (0.78 to 1.19) | 1.00 | 1.17 (0.94 to 1.45) |
| Adjusted RR (95% CI) | 1.00 | 0.96 (0.77 to 1.18) | 1.00 | 1.18 (0.95 to 1.46) |
| Sinusitis symptoms | ||||
| Days unwell at 3 mo, median (IQR) | 6 (1 to 18) | 5 (0 to 15) | 6 (1 to 17) | 6 (0 to 18) |
| Univariate RR (95% CI) | 1.00 | 0.88 (0.75 to 1.03) | 1.00 | 0.97 (0.83 to 1.14) |
| Adjusted RR (95% CI) | 1.00 | 0.88 (0.75 to 1.03) | 1.00 | 0.95 (0.81 to 1.12) |
| Days unwell at 6 mo, median (IQR) | 7 (0 to 18) | 4 (0 to 14) | 5 (0 to 14) | 6 (0 to 18) |
| Univariate RR (95% CI) | 1.00 | 0.82 (0.69 to 0.98) | 1.00 | 1.02 (0.86 to 1.21) |
| Adjusted RR (95% CI) | 1.00 | 0.81 (0.68 to 0.96) | 1.00 | 1.02 (0.85 to 1.22) |
Note: CI = confidence interval, IQR = interquartile range, RR = risk ratio, RTI = respiratory tract infection.
↵* Includes cough, cold, sore throat and fever.