Pulse Oximetry for the Detection of Obstructive Sleep Apnea Syndrome: Can the Memory Capacity of Oxygen Saturation Influence Their Diagnostic Accuracy?
Table 3
Sensitivity and specificity of adjusted desaturation index with different data storage rates.
Data storage rates WristOx 3100
1 Hz
0.5 Hz
0.25 Hz
Sensitivity (CI95%)
Specificity (CI95%)
Sensitivity (CI95%)
Specificity (CI95%)
Sensitivity (CI95%)
Specificity (CI95%)
OSAS = RDI ≥ 5 Oximetry criteria
OSAS = RDI ≥ 5 Oximetry criteria
OSAS = RDI ≥ 5 Oximetry criteria
ADI2 > 19.7
85.7 (76.4–92.4)
100 (80.5–100)
ADI2 > 19.5
85.7 (76.4–92.4)
94.1 (71.3–99.9)
ADI2 > 18.4
85.7 (76.4–92.4)
100 (80.5–100)
ADI3 > 7.6
89.3 (80.6–95)
94.1 (71.3–99.9)
ADI3 > 10.4
81 (70.9–88.7)
100 (80.5–100)
ADI3 > 7.3
86.9 (77.8–93.3)
100 (80.5–100)
ADI4 > 2.1
94 (86.7–98)
88.2 (63.6–98.5)
ADI4 > 3.7
88.1 (79.2–94.1)
94.1 (71.3–99.9)
ADI4 > 3.6
89.3 (80.6–95)
100 (80.5–100)
OSAS = RDI ≥ 10 Oximetry criteria
OSAS = RDI ≥ 10 Oximetry criteria
OSAS = RDI ≥ 10 Oximetry criteria
ADI2 > 19.7
92.1 (83.6–97)
92 (74–99)
ADI2 > 23.3
84.2 (74–91.6)
96 (79.6–99.9)
ADI2 > 18.4
90.8 (81.9–96.2)
88 (68.8–97.5)
ADI3 > 9.9
89.5 (80.3–95.3)
92 (74–99)
ADI3 > 10.6
86.8 (77.1–93.5)
96 (79.6–99.9)
ADI3 > 8.6
89.5 (80.3–95.3)
92 (74–99)
ADI4 > 5.7
85.5 (75.6–92.5)
96 (79.6–99.9)
ADI4 > 5.6
82.9 (72.5–90.6)
100 (86.3–100)
ADI4 > 4
88.2 (78.7–94.4)
92 (74–99)
OSAS = RDI ≥ 15 Oximetry criteria
OSAS = RDI ≥ 15 Oximetry criteria
OSAS = RDI ≥ 15 Oximetry criteria
ADI2 > 22.8
94.2 (85.8–98.4)
90.6 (75–98)
ADI2 > 23.3
89.9 (80.2–95.8)
90.6 (75–98)
ADI2 > 22.1
89.9 (80.2–95.8)
87.5 (71–96.5)
ADI3 > 12.3
94.2 (85.8–98.4)
90.6 (75–98)
ADI3 > 10.8
91.3 (82–96.7)
90.6 (75–98)
ADI3 > 9.1
92.7 (83.9–97.6)
87.5 (71–96.5)
ADI4 > 5.8
91.3 (82–96.7)
93.7 (79.2–99.2)
ADI4 > 6.1
87 (76.7–93.9)
96.9 (83.8–99.9)
ADI4 > 6.8
84.1 (73.3–91.8)
96.9 (83.8–99.9)
RDI: respiratory disturbance index; ADI2, 3, and 4: adjusted desaturations index ≥2%, 3%, and 4%; LR (+) and (−): positive and negative likelihood ratio; CI95%: confidence interval 95%.
