Table 6.
The performance of SVM model in subgroups including men, women, <65 y/o, and ≥65 y/o
| AHI cutoff | No. of ≥AHI cutoff | AUROC | F1 score | Accuracy (%) | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | LR+ | LR− | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Male | ≥5 | 4,653 | 0.80 (0.77–0.83) | 0.82 (0.80–0.83) | 71.82 (69.59–74.04) | 71.21 (69.04–73.37) | 76.06 (73.04–79.08) | 95.35 (94.67–96.04) | 27.69 (25.55–29.84) | 3.00 (2.59–3.42) | 0.38 (0.34–0.42) |
| ≥15 | 3,550 | 0.77 (0.77–0.78) | 0.76 (0.70–0.81) | 69.86 (65.74–73.98) | 69.30 (59.97–78.63) | 71.08 (63.99–78.16) | 83.70 (81.83–85.58) | 52.62 (48.17–57.07) | 2.44 (2.07–2.82) | 0.43 (0.35–0.51) | |
| ≥30 | 2,425 | 0.76 (0.74–0.78) | 0.66 (0.59–0.73) | 69.65 (67.17–72.13) | 64.58 (52.25–76.91) | 74.06 (67.47–80.64) | 68.50 (66.53–70.48) | 71.09 (66.21–75.98) | 2.52 (2.29–2.74) | 0.47 (0.36–0.59) | |
| Female | ≥5 | 1,106 | 0.78 (0.73–0.83) | 0.79 (0.74–0.84) | 72.76 (67.28–78.24) | 77.75 (70.55–84.96) | 62.64 (56.94–68.35) | 80.79 (77.74–83.85) | 58.64 (50.32–66.96) | 2.11 (1.65–2.58) | 0.36 (0.23–0.48) |
| ≥15 | 661 | 0.79 (0.75–0.83) | 0.67 (0.65–0.69) | 67.92 (63.79–72.06) | 81.84 (79.15–84.53) | 58.64 (50.16–67.12) | 57.13 (52.74–61.53) | 82.87 (81.88–83.86) | 2.02 (1.65–2.39) | 0.31 (0.29–0.33) | |
| ≥30 | 366 | 0.79 (0.75–0.82) | 0.52 (0.47–0.57) | 68.17 (61.43–74.91) | 77.04 (74.41–79.67) | 65.64 (56.66–74.62) | 39.47 (33.20–45.75) | 90.91 (89.86–91.96) | 2.33 (1.68–2.98) | 0.35 (0.31–0.40) | |
| <65 y/o | ≥5 | 4,870 | 0.82 (0.79–0.85) | 0.83 (0.80–0.85) | 74.52 (71.62–77.41) | 74.68 (71.42–77.93) | 73.81 (69.80–77.82) | 92.56 (91.41–93.71) | 40.14 (36.42–43.86) | 2.88 (2.46–3.31) | 0.34 (0.29–0.40) |
| ≥15 | 3,577 | 0.81 (0.80–0.82) | 0.77 (0.74–0.81) | 73.43 (71.47–75.39) | 76.46 (68.81–84.10) | 68.94 (62.42–75.46) | 78.66 (76.51–80.82) | 66.74 (62.27–71.22) | 2.50 (2.15–2.85) | 0.34 (0.27–0.41) | |
| ≥30 | 2,347 | 0.79 (0.78–0.81) | 0.66 (0.62–0.70) | 70.96 (69.22–72.70) | 71.83 (62.05–81.61) | 70.40 (63.93–76.87) | 61.22 (58.19–64.25) | 79.75 (75.68–83.82) | 2.46 (2.13–2.79) | 0.40 (0.29–0.50) | |
| ≥65 y/o | ≥5 | 799 | 0.70 (0.64–0.76) | 0.78 (0.76–0.79) | 65.84 (63.68–68.00) | 65.83 (63.37–68.30) | 65.73 (52.01–79.45) | 94.47 (92.42–96.52) | 17.94 (14.85–21.04) | 2.19 (0.88–3.50) | 0.53 (0.43–0.63) |
| ≥15 | 634 | 0.69 (0.67–0.72) | 0.72 (0.66–0.79) | 64.94 (59.99–69.88) | 65.75 (54.68–76.82) | 62.92 (50.00–75.84) | 81.77 (77.98–85.57) | 42.92 (39.06–46.79) | 1.87 (1.33–2.40) | 0.54 (0.46–0.63) | |
| ≥30 | 444 | 0.70 (0.68–0.72) | 0.62 (0.54–0.69) | 64.16 (61.20–67.12) | 58.52 (45.19–71.85) | 69.74 (60.90–78.58) | 66.07 (63.15–68.99) | 63.23 (58.75–67.71) | 1.97 (1.71–2.23) | 0.59 (0.47–0.71) | |
| Male < 65 y/o | ≥5 | 3,972 | 0.81 (0.78–0.84) | 0.82 (0.80–0.84) | 72.47 (70.56–74.37) | 71.80 (69.64–73.97) | 76.81 (72.96–80.67) | 95.29 (94.52–96.06) | 29.46 (27.70–31.22) | 3.14 (2.63–3.65) | 0.37 (0.33–0.40) |
| ≥15 | 3,075 | 0.78 (0.77–0.79) | 0.76 (0.72–0.81) | 70.74 (67.41–74.07) | 70.18 (61.74–78.62) | 71.89 (64.65–79.14) | 83.77 (81.54–86.01) | 54.50 (50.56–58.44) | 2.56 (2.08–3.05) | 0.41 (0.34–0.48) | |
| ≥30 | 2,077 | 0.77 (0.75–0.79) | 0.66 (0.61–0.72) | 70.15 (68.40–71.91) | 65.96 (54.65–77.26) | 73.64 (67.30–79.97) | 67.68 (65.67–69.69) | 72.62 (68.15–77.10) | 2.53 (2.29–2.78) | 0.46 (0.35–0.56) | |
| Male ≥ 65 y/o | ≥5 | 591 | 0.66 (0.50–0.82) | 0.77 (0.71–0.84) | 64.99 (56.26–73.71) | 65.65 (58.02–73.28) | 57.09 (30.16–84.02) | 94.53 (90.98–98.08) | 13.31 (5.67–20.95) | 1.82 (0.85–2.79) | 0.81 (-0.07–1.70) |
| ≥15 | 475 | 0.69 (0.64–0.75) | 0.72 (0.59–0.85) | 64.67 (52.79–76.55) | 64.21 (46.97–81.45) | 66.08 (57.94–74.23) | 84.07 (81.07–87.07) | 40.99 (30.06–51.92) | 1.91 (1.45–2.37) | 0.54 (0.31–0.76) | |
| ≥30 | 348 | 0.68 (0.65–0.72) | 0.60 (0.51–0.70) | 61.58 (57.45–65.71) | 54.82 (40.88–68.77) | 69.49 (61.48–77.50) | 67.95 (66.43–69.47) | 57.03 (52.80–61.27) | 1.80 (1.68–1.92) | 0.64 (0.52–0.77) | |
| Female < 65 y/o | ≥5 | 898 | 0.78 (0.72–0.84) | 0.78 (0.74–0.83) | 72.32 (67.63–77.01) | 78.52 (72.21–84.82) | 61.35 (55.96–66.73) | 78.23 (75.33–81.13) | 62.05 (54.74–69.35) | 2.06 (1.67–2.45) | 0.35 (0.24–0.46) |
| ≥15 | 502 | 0.79 (0.76–0.83) | 0.66 (0.62–0.70) | 67.70 (62.00–73.39) | 85.67 (81.39–89.94) | 57.70 (48.59–66.82) | 53.22 (48.26–58.19) | 87.83 (84.22–91.43) | 2.07 (1.68–2.45) | 0.25 (0.17–0.33) | |
| ≥30 | 270 | 0.79 (0.76–0.83) | 0.49 (0.43–0.55) | 66.83 (59.86–73.80) | 81.11 (76.69–85.54) | 63.44 (55.04–71.83) | 35.01 (28.68–41.34) | 93.33 (91.53–95.14) | 2.30 (1.61–2.99) | 0.30 (0.21–0.39) | |
| Female ≥ 65 y/o | ≥5 | 208 | 0.71 (0.57–0.85) | 0.78 (0.72–0.85) | 68.88 (62.49–75.26) | 68.31 (56.76–79.85) | 71.07 (47.64–94.50) | 93.19 (89.36–97.02) | 29.79 (28.03–31.56) | 3.14 (1.14–5.13) | 0.44 (0.39–0.49) |
| ≥15 | 159 | 0.68 (0.61–0.74) | 0.66 (0.59–0.73) | 60.30 (54.38–66.22) | 60.32 (50.11–70.54) | 60.39 (50.49–70.30) | 73.41 (68.65–78.17) | 46.04 (39.42–52.66) | 1.56 (1.25–1.86) | 0.66 (0.49–0.84) | |
| ≥30 | 96 | 0.70 (0.65–0.76) | 0.59 (0.49–0.69) | 66.88 (56.89–76.87) | 60.47 (47.36–73.59) | 70.95 (55.26–86.63) | 58.64 (42.90–74.38) | 73.92 (65.99–81.84) | 2.66 (0.42–4.91) | 0.57 (0.34–0.79) |
The data were presented as mean (95% confidence interval).