Relationship between tobacco consumption and spinal stiffness levels in patients with ax-SpA

SmokerOccasional smokerNon smokerPχ2
Cervical stiffness84.2%77.1%73.1%0.1719.044
Dorsal stiffness76.0%76.6%72.4%0.4086.141
Lumbar stiffness89.0%93.8%83.5%0.00220.518
  • Source: Spanish Atlas.