Table 8.
Study characteristics of nasal airflow devices categorya.
| Study, year | Digital tool | OSAb definition | Sample size, n (group type: D=derivation group, V=validation group) | OSA prevalence, n (%) | Area under the curve, (95% CI) | Sensitivity, % (95% CI) | Specificity, % (95% CI) |
| Shochat et al [20], 2002 | Under-the-nose pressure sensor SleepStrip | AHIc>10; AHI>20; AHI>40d | 288 (D) | —e | — | 86 (—); 80 (—); 80 (—)e |
57 (—); 70 (—); 86 (—)d |
| Wong et al [55], 2008 | Nasal cannula | — | 34 (D) | — | — | — | — |
| Ozmen et al [54], 2011 | Under-the-nose pressure sensor SleepStrip | AHI>10; AHI>20; AHI>40d | 64 (D) |
|
0.80 (0.68-0.89); 0.84 (0.72-0.92); 0.94 (0.85-0.98)d |
83 (—); 80 (—); 94 (—)d |
77 (—); 87 (—); 94 (—)d |
| Dinç et al [53], 2014 | Under-the-nose pressure sensor SleepStrip | AHI≥5; AHI≥15; AHI>30d | 41 (D) | 33 (81) | 0.77 (0.61-0.94); 0.82 (0.73-1.00); 0.91 (0.79-1.00)d |
54 (—); 44 (—); 45 (—)d |
100 (—); 100 (—); 100 (—)d |
| Jin and Sánchez-Sinencio [27], 2015 | Under-the-nose pressure sensor | — | 5 (D) | — | — | — | — |
aIf the study used different clinical cutoff values for the diagnosis of obstructive sleep apnea, the results are only presented for the best-achieved cutoff and marked in italics. When external validation was performed, the results are only presented for the validation group.
bOSA: obstructive sleep apnea.
cAHI: apnea-hypopnea index.
dBest-achieved cutoff.
eNot available.