Table 4.

Withdrawals of the 160 patients with displaced (Gartland [4] type II and III) extension type supracondylar fractures of humerus randomly assigned to receive percutaneous fixation with either crossed medial-lateral pin or, two-lateral pins

Lost to follow-up	Crossed medial-lateral pin entry group (n = 80)	Two-lateral pin entry group (n = 80)	p value
After the surgery ψ	2 (3)	2 (3)	1.0ρ
After the first visit ψ	5 (6)	4 (5)	1.0ρ
After the second visit ψ	9 (11)	8 (10)	1.0ρ

ψ The datas are given as the number (%) of patients. ρ Fisher's exact test