Table 2.
Comparison of respiratory function test results in patients with asthma before and after the intervention
| Variables | Probiotic group (n = 17) | Placebo group (n = 18) | Cohen’s d (95% CI) | p |
|---|---|---|---|---|
| FEV1 (L) | ||||
| Baseline | 2.5 ± 0.66 | 2.41 ± 0.6 | 0.14 (−0.52 to 0.80) | 0.674t |
| 2nd consultation | 2.7 ± 0.66 | 2.40 ± 0.64 | 0.46 (−0.22 to 1.12) | 0.135t |
| Cohen’s d (95% CI) | −0.30 (−0.98 to 0.38) | 0.01 (−0.65 to 0.68) | ||
| p | 0.0039tp | 0.577tp | ||
| FVC (L) | ||||
| Baseline | 3.4 ± 0.69 | 3.2 ± 0.65 | 0.29 (−0.37 to 0.96) | 0.449t |
| 2nd consultation | 3.6 ± 0.57 | 3.3 ± 0.68 | 0.47 (−0.21 to 1.14) | 0.143t |
| Cohen’s d (95% CI) | −0.31 (−0.98 to 0.37) | −0.15 (−0.80 to 0.51) | ||
| p | 0.0007tp | 0.150tp | ||
| FEV1/FVC (%) | ||||
| Baseline | 72 ± 7 | 73 ± 17 | −0.07 (−0.74 to 0.59) | 0.241w |
| 2nd consultation | 74 ± 11 | 71 ± 17 | 0.21 (−0.54 to 0.77) | 0.285w |
| Cohen’s d (95% CI) | −0.21 (−0.89 to 0.46) | 0.12 (−0.54 to 0.77) | ||
| p | 0.463wp | 0.202wp | ||
T Student’s t and W the Wilcoxon Mann-Whitney tests for independent samples and Tp Student’s t and Wp the Wilcoxon tests for paired samples.
FEV1 forced expiratory volume in one second, FVC forced vital capacity