The association of widely used electromagnetic waves exposure and pregnancy and birth outcomes in Yazd women: a cohort study

Table 2 The association between common electromagnetic exposure sources and the miscarriage outcome in the present study

	Model No.1 (n = 1666)			Model No.2 (n = 1666)			Model No.3 (n = 1666)
Variables	RR	CI	p	RR	CI	p	RR	CI	p
Duration of cell phone conversation ^(hour)	1.00252	1.0018–1.0031	P < *0.001*	1.0042	1.0038–1.0046	P < *0.001*	1.0061	1.003–1.0093	P < *0.001*
Duration of cordless phone conversation ^(hour)	1.0019	0.9982–1.0056	0.2	0.996	0.9933–0.9986	*0.003*	0.999	0.99–1.008	0.83
Duration of exposure to Wi-Fi ^(hour)	0.9988	0.9956–1.002	0.47	0.9989	0.9959–1.002	0.5	1.0018	0.9992–1.0043	0.16
Number of sent SMS	1.000258	0.9993 − 1.0011	0.56	1.0003	0.9995–1.001	0.4	1.0002	0.9991–1.0012	0.67

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