Table 3.

The prevalence of spondylolisthesis in patients with or without spondylolysis (lysis).

	Total		Male		Female
Age (yr)	Lysis (+)	Lysis (−)	Lysis (+)	Lysis (−)	Lysis (+)	Lysis (−)
−49	0/9 (2)	0/113	0/4 (1)	0/70	0/5 (1)	0/43
50–59	1/5	1/65	1/5	1/45	0/0	0/20
60–69	5/5	7/117	4/4	1/66	1/1	6/51
70–79	4/7 (2)	14/118	2/5 (2)	4/66	2/2	10/52
80-	9/11 (1)	18/130	6/8 (1)	7/63	3/3	11/67
Total	19/37 (5)	40/543	13/26 (4)	13/310*	6/11 (1)	27/233*

Parenthesis indicates number of unilateral spondylolysis.

*Significant difference between male and female.