TABLE 2

Changes in Pain Clinical Outcome (Pain Intensity) Over Time

VariableOverallNonbooster UnitsBooster Units
12 mo24 mo36 mo12 mo24 mo36 mo12 mo24 mo36 mo
No pain31 (10)24 (8)31 (10)16 (10)7 (4)14 (9)15 (9)17 (11)17 (11)
Mild pain138 (43)121 (38)141 (44)65 (41)68 (43)72 (45)73 (46)53 (33)69 (43)
Moderate pain110 (34)114 (36)88 (28)64 (40)58 (36)45 (28)46 (30)56 (35)43 (27)
Severe pain41 (13)61 (19)60 (19)15 (9)27 (17)29 (18)26 (16)34 (21)31 (19)
  • Data are presented as n (%). Rao-Scott χ2 test of association: Overall, χ2(6) = 9.00, P = .17; Nonbooster, χ2(6) = 11.17, P = .083; Booster, χ2(6) = 4.72, P = .58. These analyses were restricted to only those participants who underwent a painful procedure on all 16 units.