| Metformin Group | Placebo Group | p-value |
---|---|---|---|
Average of largest mass size before intervention (mm) | 13.06 ± 4.46 | 13.52 ± 5.96 | 0.57 |
Average of largest mass size after intervention (mm) | 10.66 ± 6.49 | 11.48 ± 8.11 | 0.47 |
Change in size of the largest mass (mm) | 2.40 ± 4.96 | 2.04 ± 6.67 | 0.69 |
Average of smallest mass size before intervention (mm) | 6.81 ± 2.25 | 7.65 ± 3.36 | 0.19 |
Average of smallest mass size after intervention (mm) | 3.58 ± 4.21 | 7.51 ± 7.38 | 0.006 |
Change in size of the smallest mass (mm) | 3.26 ± 3.26 | 0.14 ± 6.48 | 0.007 |
 A less than 20 % increase of largest mass, n (%) | 74 (94 %) | 81 (88 %) |  |
A more than 20 % increase of largest mass, n (%) | 5 (6 %) | 11 (12 %) | 0.17 |
 A less than 20 % increase of smallest mass, n (%) | 41 (95.3 %) | 27 (75 %) |  |
A more than 20 % increase of smallest mass, n (%) | 2 (4.7 %) | 9 (25 %) | 0.009 |