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Table 5 Results of spirometry parameters in rheumatoid arthritis patients and control group

From: Relation between pulmonary function tests and ultrasonographic changes of asymptomatic anterior chest wall joints in rheumatoid arthritis patients

  RA (n = 22) Control (n = 22) P
Restrictive
(n = 14) (63.6%)
Non-restrictive
(n = 8) (36.4%)
Range Mean ± SD Range Mean ± SD Range Mean ± SD
FEV1% of predicted 71–73 70.4 ± 9.1 91.4–95.9 94.9 ± 25.1 96.1–99.2 98.3 ± 13.09 < 0.05
FEV1/L 1.69–1.83 1.75 ± 0.41 1.91–2.31 2.06 ± 0.55 2.15–2.68 2.45 ± 0.64
FEV1/FVC 106–113 107.9 ± 3.23 84.65–92.11 85.18 ± 7.46 94.1–98.3 95.1 ± 2.4
FVC % of predicted 63–68 65.5 ± 5 85.1–88.3 92.27 ± 22.69 98.56–99.96 99.53 ± 12.12
FVC/L 1.66–1.75 1.69 ± 0.37 2.29–2.31 2.21 ± 0.63 2.61–2.89 2.72 ± 0.66
  1. FEV1 forced expiratory volume in 1 s, FVC forced vital capacity, SD standard deviation