Table 1.

Patient data^a (TLIF transforaminal lumbar interbody fusion, AGF autologous growth factors)

	TLIF + AGF (n=23)	TLIF (n=111)
Gender: M/F	8/15	42/69
Mean age at surgery (yrs)	44.3 (21–66)	47.7 (26–81)
Mean follow-up (yrs)	2.1 (2–2.3)	2.7 (2–4)
Previous surgery	14 (61%)	68 (61%)
Mean body mass index	27.9 (20.4–39.4)	28.7 (16.3–56.7)
Co-morbidities	7 (30%)	65 (59%)
Cigarette smoking	12 (52%)	62 (56%)

^a Figures in parentheses denote either ranges or percentages