Table 2.

Intervention characteristics of the study subjects according to the success rate of balloon adhesiolysis for multiple targets.

Parameter	Below 50% (n = 48)	50–85% (n = 79)	85–100% (n = 148)	p-Value
Target level, n (%)				0.284
1 level (L3-4/L4-5/L5-S1) 2 levels (L3-4-5/L4-5-S1) 3 levels (L2-3-4-5/L3-4-5-S1) 4 levels (L2-3-4-5-S1)	0/24/3 (0.0/50.0/6.3) 5/15 (10.4/31.3) 0/1 (0.0/2.1) 0 (0.0)	2/31/10 (2.5/39.2/12.7) 9/24 (11.4/30.4) 0/3 (0.0/3.8) 0 (0.0)	2/56/9 (1.4/37.8/6.1) 21/40 (14.2/27.0) 5/12 (3.4/8.1) 3 (2.0)
Target site, n (%)				0.302
Left/right/both/central/Lt, central/Rt, central/both, central	8/6/14/1/4/5/ 10 (16.7/12.5/29.2/2.1/8.3/10.4/20.8)	13/6/24/2/4/7/23 (16.5/7.6/30.4/2.5/5.1/8.9/29.1)	19/13/40/17/17/12/30 (12.8/8.8/27.0/11.5/11.5/8.1/20.3)
Number of target sites, n (%)				0.368
2–3/4–5/above 6	18/22/8 (37.5/45.8/16.7)	21/35/23 (26.6/44.3/29.1)	54/57/37 (36.5/38.5/25.0)

The patients were divided into groups of less than 50%, 50–85%, and 85– 00% depending on the success rate of the ballooning procedure for multiple target sites. Data are expressed numbers (%). Lt, left; Rt, right.