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. 2021 Sep 24;13(9):e18253. doi: 10.7759/cureus.18253

Table 6. Relation of failure of biological therapy and allergic reaction to taken biological therapy, clinical and laboratory data, and drugs used.

 * Mann-Whitney test

Anti-CCP; Anti-cyclic citrullinated peptide, Anti-MCV; Anti-mutated citrullinated vimentin, ESR; erythrocyte sedimentation rate, CRP; C-reactive protein, dsDNA; double-stranded DNA, ANA; antinuclear antibodies, DAS-28; disease activity score, NSAIDs; nonsteroidal anti-inflammatory drugs, HB level; hemoglobin level, MTX; methotrexate

Variable P-value χ2 P-value
Absent No. (%) Present No. (%)
Allergic reaction to taken biological therapy Yes 31 (100) 0 (0.0) 24.22 < 0.001
No 165 (54.3) 139 (45.7)
Anti-CCP Yes 96 (57.8) 70 (42.2) 0.06 0.803
No 100 (59.2) 69 (40.8)
Anti-MCV Yes 11 (57.5) 82 (42.5) 1.67 0.433
No 85 (60.3) 56 (39.7)
Not applicable 0 (0.0) 1 (100)
ESR High 97 (56.4) 75 (43.6) 0.65 0.42
Normal 99 (60.7) 64 (39.3)
CRP > 3 135 (57.2) 101 (42.8) 2.13 0.343
≤ 3 61 (82.2) 37 (37.8)
Not applicable 0 (0.0) 1 (100)
dsDNA 0-200 75 (45) 64 (46) 2.1 0.53
201-300 61 (60.4) 40 (39.6)
301-800 57 (63.3) 33 (36.7)
> 800 3 (60) 2 (40)
ANA Positive 114 (56.7) 87 (43.3) 0.66 0.415
Negative 82 (61.2) 52 (88.8)
Activity Yes 164 (58.6) 116 (41.4) 0.003 0.957
No 32 (58.2) 23 (41.8)
DAS-28 ≤ 2.6 2 (100) 0 (0.0) 5.35 0.148
2.6-3.2 70 (61.4) 441 (38.6)
3.2-5.1 98 (60.1) 65 (39.9)
≥ 5.1 26 (46.4) 30 (53.6)
NSAIDs Yes 169 (62.6) 101 (37.4) 9.56 0.002
No 27 (41.5) 38 (58.5)
Steroid dose < 5mg 129 (67.9) 61 (32.1) 20.88 < 0.001
5-10mg 64 (48.1) 69 (51.9)
> 10mg 2 (18.2) 9 (81.8)
Not applicable 1 (100) 0 (0.0)
Quantitative variables Duration 47.55± 85.27 26.55± 36.48 3.74* < 0.001
HB level 11.73 ± 1.72 11.85± 1.75 0.85* 0.393
Platelet level 330.59±114.47 315.29 ±76.7 0.87* 0.38
Creatine level 96.93± 50.8 76.98± 75.93 1.04* 0.298
MTX Dose 8.58 ± 4.58 8.82 ± 4.18 0.81* 0.215