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Table 4: 
Pain severity scores for intra-articular facet and transforaminal corticosteroid injections according to the baseline score
Variable and Baseline VAS Pain Score (0–100)Groups
IFSITFSI
Subjects (No.)
    It2828
    At2927
VAS% (mean) (95% CI)
    20
        It53.3 (4.0–102.7)+83.4 (+132.8 to +34.0)
        At41.6 (17.1–100.3)+70.6 (+128.5 to +12.7)
    40
        It49.5 (16.7–82.4)+39.4 (+72.1 to +6.6)
        At39.4 (0.6–78.2)+28.9 (+66.9–9.2)
    60
        It45.8 (21.8–69.8)4.6 (+17.2–26.5)
        At37.2 (9.4–65.0)12.9 (+12.0–37.8)
    80
        It42.0 (11.6–72.4)48.7 (23.3–74.0)
        At35.0 (+0.3–70.4)54.6 (25.2–84.0)
    95
        It39.1 (2.7–80.9)81.7 (46.0–117.3)
        At33.4 (15.6–82.3)86.0 (44.1–127.8)
  • Note:—VAS% indicates the relative difference between postintervention and baseline VAS pain scores; It, intention-to-treat analysis; At, as-treated analysis.