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Table 3 Subgroup analyses of typical and atypical CIDP

From: Quantitative grip force assessment of muscular weakness in chronic inflammatory demyelinating polyneuropathy

Parameter (Unit) Typical CIDP Atypical CIDP HC p-value Post hoc* No.**
Mean isometric grip force 500g_left hand (N) 9.34 (3.19) 12.20 (4.67) 9.1 (2.95) 0.0777 a) ns b) ns c) ns 15/17/27
Mean isometric grip force 500g_right hand (N) 9.40 (3.93) 11.70 (3.73) 10.38 (4.05) 0.1681 a) ns b) ns c) ns 16/16/28
Grip force variability 500g_ left hand (%) 6.94 (2.56) 6.99 (2.20) 5.40 (1.79) 0.0319 a) ns b) ns c) ns 15/17/27
Grip force variability 500g_ right hand (%) 7.16 (2.11) 5.56 (1.46) 5.4 (2.38) 0.0043 a) ** b) ns c) ns 16/16/28
Orientation index 500g_ left hand (°/s) 13.24 (7.38) 9.54 (4.47) 5.31 (4.13) <  0.0001 a) *** b) ** c) Ns 13/17/26
Orientation index 500g_ right hand (°/s) 13.45 (6.37) 11.08 (8.82) 5.17 (3.36) <  0.0001 a) *** b) ** c) Ns 14/16/27
Position index 500g_ left hand (cm/s) 3.43 (1.35) 3.59 (1.65) 1.56 (0.83) <  0.0001 a) *** b) *** a) Ns 10/19/26
Position index 500g_ right hand (cm/s) 3.20 (1.91) 3.68 (1.56) 1.84 (1.47) <  0.0001 a) ** b) *** a) Ns 10/19/27
  1. * a) Typical CIDP vs. HC, b) Atypical CIDP vs. HC, c) Typical CIDP vs. Atypical CIDP
  2. ** typical/atypical/HC