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Table 4 Side effects reported by randomization group

From: Comparative effectiveness of sildenafil citrate and estradiol valerate as adjuvants during clomiphene citrate-assisted ovarian stimulation cycles in patients with unexplained infertility: a double-blind randomized controlled trial

Side effects

Treatment regimens

   
  

CCSC

N = 168

CCEV

N = 171

FE

RR [95% CI]

NNH

 

n

%

n

%

   

Hot flushes

       
 

Yes

2

1.19

10

5.85

0.019

0.32[0.09–1.68]

3

No

166

98.81

161

94.15

   

Headache

       
 

Yes

18

10.71

3

1.75

0.000

1.82[1.47–2.24]

3

No

150

89.29

168

98.25

   

Mild hyperstimulation

       
 

Yes

2

1.19

3

1.75

0.508

0.80[0.27–2.36]

 

No

166

98.81

168

98.25

   
  1. CCSC = clomiphene citrate + sildenafil citrate, CCEV = clomiphene citrate + estradiol valerate, FE = Fisher’s exact test, RR = relative risk, CI = confidence interval, NH = number needed to treat for harm.