Table 3 Odds ratios (ORs) and 95 % confidence intervals (CIs) from case-control studies on acoustic neuromas and pituitary tumors

Acoustic neuroma

 Pettersson et al. 2014 [27]

451

710

1.18 (0.88–1.59)

 Hardell et al. 2013 [24]

316

3.530

1.6 (1.2–2.2)

 Schlehofer et al. 2007 [21]

97

194

0.67 (0.38–1.19)

 Schoemaker et al. 2005 [25]

678

3.553

0.9 (0.7–1.1)

Pituitary Tumors

 Shrestha et al. 2015 [22]

80

240

0.39 (0.21–0.72)

 Schoemaker et al. 2009 [26]

291

630

0.9 (0.7–1.3)

 Takebayashi et al. 2008 [23]

102

683

0.90 (0.50–1.61)