18 February 2024: Clinical Research
Vertical Relationship Ratio (VRR): A High Reliability and Accuracy Radiographic Measurement for Basilar Invagination in Rheumatoid Arthritis
Monchai Ruangchainikom 1ABDEF , Ekkapoj Korwutthikulrangsri 1E , Apisit Rattanatanasarn 1C , Ishthayapong Kanjanakeereewong 1C , Win Boonsirikamchai 2C , Panlop Tirawanish 3C , Surin Thanapipatsiri 1A , Werasak Sutipornpalangkul 1ADE*DOI: 10.12659/MSM.943329
Med Sci Monit 2024; 30:e943329
Table 3 Effect of sex on all different measurements in each group of patients.
| Sex | P value (*P<0.05) | ||
|---|---|---|---|
| Male | Female | ||
| (Mean±SD) (Min–Max) | (Mean±SD) (Min–Max) | ||
| Vertical relationship ratio | |||
| Non-RA | 2.14±0.10 (2.03–2.36) | 2.21±0.12 (2.04–2.34) | 0.135 |
| RA with BI | 1.72±0.32 (1.17–2.03) | 1.83±0.16 (1.50–2.16) | 0.741 |
| RA without BI | 2.15±0.07 (2.07–2.24) | 2.23±0.12 (2.02–2.56) | 0.111 |
| Ranawat method | |||
| Non-RA | 17.90±2.09 (15.03–23.26) | 16.99±1.42 (14.36–19.88) | 0.188 |
| RA with BI | 12.51±5.52 (3.52–21.98) | 11.99±3.03 (5.70–18.80) | 0.786 |
| RA without BI | 16.52±1.01 (15.47–17.78) | 16.55±2.17 (10.33–20.81) | 0.979 |
| Modified Ranawat | |||
| Non-RA | 35.40±2.61 (30.77–40.81) | 33.34±1.44 (31.92–36.81) | 0.016* |
| RA with BI | 29.10±6.97 (18.08–39.96) | 26.98±3.20 (21.76–33.98) | 0.380 |
| RA without BI | 32.74±2.13 (29.06–35.30) | 32.67±2.81 (26.39–40.31) | 0.950 |
| Redlund-Johnell line | |||
| Non-RA | 43.02±5.47 (33.09–53.02) | 39.79±5.77 (32.36–51.40) | 0.114 |
| RA with BI | 36.38±6.44 (24.36–45.83) | 33.26±5.44 (19.56–43.08) | 0.175 |
| RA without BI | 44.19±3.79 (39.97–49.83) | 38.32±5.50 (27.31–49.51) | 0.018* |
| Non-RA – non-rheumatoid arthritis patients; RA with BI – rheumatoid arthritis patients with basilar invagination; RA without BI – rheumatoid arthritis patients without basilar invagination. * Significance: value less than 0.05. Statistical analysis by independent-sample test. | |||