Table 3.

JOA scores and recovery rates in different age groups, genders and pre-operative duration of symptoms

	Pre-operative JOA score	Final JOA score	Recovery rate %
Age <65	11.7+	13.8	40
Age >65	8.3+	11.0	33
Male	10.5	12.6	52
Female	9.1	12.2	60
Symptoms duration <6 months	8.6	11.5	46
Symptoms duration 6–12 months	10.3	13.4	88
Symptoms duration >12 months	10.6	11.6	28

⁺Difference in pre-operative JOA scores in different age groups was statistically significant (P < 0.05)