Table 1 The demographic data of patients enrolled in the study
From: Investigating the prevalence of cervical spine instability in patients with rheumatoid arthritis
Variable | Number (%) | Range | Mean ± SD | |
|---|---|---|---|---|
Sex | Male = 11 | |||
Female = 39 | ||||
Age | 21–82 | 51.52 ± 13.40 | ||
Disease duration | Normal AADI | 4.55 ± 3.47 | Total = 3 months–20 years | 5.63 ± 5.21 |
Abnormal AADI | 12.28 ± 7.1 | |||
AADI static (< 3) | Normal | 48 (96) | ||
Abnormal | 2 (4) | |||
Dynamic AADI | Normal | 43 (86) | ||
Abnormal | 7 (14) | |||