Table 3.

The correlation between needle size and angle of puncture. The data were considered significant when P-value < 0.05.

	45°	90°	P-value
No. 18G	14 (56%)	5 (20%)	0.01
No. 20G	2 (8%)	2 (8%)	0.64
No. 21G	0 (0%)	3 (12%)	0.07