Systematic review of dynamization vs exchange nailing for delayed/non-union femoral fractures

Table 2 Overall demographics of patients involved in studies

	Exchange nailing		Dynamization		EN vs dynam
	Union/total reported	Significant vs total union rate	Union/total reported	Significant vs total union rate	P-values
No. of patients	556/644	-	84/131	-	P < 0.0001
Ages
Mean	38.002	-	32.234	-	-
Gender
Male	244/284	NS	37/66	NS	P < 0.0001
Female	72/86	NS	17/26	NS	NS
Tobacco use
Yes	54/74	P = 0.0023	2/3	NS	NS
No	49/62	NS	0/3	P = 0.0500	P = 0.0128
NSAIDs use
Yes	4/8	P = 0.0166	0/0	-	-
No	38/52	P = 0.0093	2/6	NS	P = 0.0463
Diabetic
Yes	0/0	-	0/0	-	-
No	10/19	P = 0.0006	0/0	-	-
IDDM (type 1)	0/0	-	0/0	-	-

NS: Not significant; NSAID: Nonsteroidal antiinflammatory drug; IDDM: Insulin-dependent diabetes mellitus.