Association of qualitative nailfold capillaroscopy pattern with connective tissue disease associated interstitial lung disease (CTD-ILD) diagnosis
| Proposed criteria | Pattern | Unadjusted OR# | 95% CI | p-value |
| Ingegnoli [19] | Normal | 1 | ||
| Minor | 2.15 | 0.58–7.98 | 0.254 | |
| Major | 3.02 | 0.67–13.63 | 0.015 | |
| Scleroderma | 15.30 | 3.37–68.99 | <0.001¶ | |
| Maricq [21] | Normal | 1 | ||
| Nonspecific | 2.05 | 0.58–7.22 | 0.262 | |
| Scleroderma | 9.39 | 2.80–31.45 | <0.001¶ | |
| Cutolo [20] | Normal | 1 | ||
| Early | 2.01 | 0.57–7.04 | 0.276 | |
| Active | 6.09 | 1.66–22.42 | 0.007¶ | |
| Late | 15.67 | 1.46–168.07 | 0.023¶ | |
| EULAR SG-MC [22] | Scleroderma | 3.91 | 1.47–10.42 | 0.006¶ |
EULAR SG-MC: European League Against Rheumatism Study Group on Microcirculation. #: odds ratios (OR) relative to a normal pattern for each classification criteria; ¶: p-value remains <0.05 adjusted for age, sex, smoking, FVC %, treatment, pulmonary hypertension.