Table 4 Comparison of between mirena and metformin groups in regard to side effects

Side effects

 Absent

10 (40%)

12 (48%)

0.35

0.50^a

 Present

15 (60%)

13 (52%)

Adverse events^c

 GIT upset

0 (0)

9 (36%)

9.6

0.004^b

 Heavy bleeding at first use

2 (8%)

0 (0)

2.1

0.5^b

 Abdominal/pelvic pain

5 (20%)

3 (12%)

0.8

0.7^b

 Hypoglycemia

0 (0)

4 (16%)

4.3

0.1^b

 Nervousness

2 (8%)

0 (0)

2.1

0.5^b

 Depression

2 (8%)

0 (0)

2.1

0.5^b

 Headache

4 (16%)

0 (0)

4.3

0.1^b

 Back pain

4 (16%)

0 (0)

4.3

0.1^b

 Myalgia

0 (0)

2 (8%)

2.1

0.5^b

 Weight gain

2 (8%)

0 (0)

2.1

0.5^b

 Breast tenderness

3 (12%)

0 (0)

2.1

0.5^b