Table 4.

Multiple regression analysis of factors that affect healing time for metacarpal fractures.

	Coefficients	SD	T value	P value
Age			−0.362	.721
Smoking PY			−0.521	.608
BMI			−0.630	.535
Fracture site	2.174	0.617	3.806	.001
No. of K-wire used	1.307	0.541	2.414	.025
Complication rate			0.291	.774

PY = pack-year, SD = standard deviation.