Table 2 Sensitivities and their 95%CI for all index tests in different subgroups
Parameter | ViroTrack Dengue Acute NS1 | SD Dengue NS1 Ag ELISA | SD Bioline DD NS1 only | SD Bioline DD IgM only | SD Bioline DD IgG only | SD Bioline DD NS1 or IgM | SD Bioline DD NS1 or IgM or IgG |
|---|---|---|---|---|---|---|---|
By Serotype | |||||||
 DENV-1 | 20/31 | 20/31 | 14/31 | 7/31 | 3/31 | 19/31 | 20/31 |
64.5 (45.4–80.8) | 64.5 (45.4–80.8) | 54.8 (36.0–72.7) | 22.6 (9.6–41.1) | 9.7 (2.0–25.8) | 61.3 (42.2–78.2) | 64.5 (45.4–80.8) | |
 DENV-2 | 23/29 | 23/29 | 24/29 | 3/29 | 3/29 | 25/29 | 27/29 |
79.3 (60.3–92.0) | 79.3 (60.3–92.0) | 82.8 (64.2–94.2) | 10.3 (2.2–27.4) | 10.3 (2.2–27.4) | 86.2 (68.3–96.1) | 93.1 (77.2–99.2) | |
 DENV-3 | 29/30 | 28/30 | 28/30 | 5/30 | 3/30 | 29/30 | 29/30 |
96.7 (82.8–99.9) | 93.3 (77.9–99.2) | 93.3 (77.9–99.2) | 16.7 (5.6–34.7) | 10.0 (2.1–26.5) | 96.7 (82.8–99.9) | 96.7 (82.8–99.9) | |
 DENV-4 | 0/1 | 0/1 | 0/1 | 0/1 | 0/1 | 0/1 | 0/1 |
0 (0–97.5) | 0 (0–97.5) | 0 (0–97.5) | 0 (0–97.5) | 0 (0–97.5) | 0 (0–97.5) | 0 (0–97.5) | |
By day of illness | |||||||
 First 5 days | 102/157 | 109/160 | 93/160 | 51/160 | 33/160 | 117/160 | 128/160 |
65.0 (57.0–72.4) | 68.1 (60.3–75.3) | 58.1 (50.1–65.9) | 31.9 (24.7–39.7) | 20.6 (14.6–27.7) | 73.1 (65.6–79.8) | 80.0 (73.0–85.9) | |
 > = 6 days | 37/66 | 42/67 | 26/67 | 52/67 | 30/67 | 55/67 | 59/67 |
56.1 (43.3–68.3) | 62.7 (50.0–74.2) | 38.8 (27.1–51.5) | 77.6 (65.8–86.9) | 44.8 (32.6–57.4) | 82.1 (70.8–90.4) | 88.1 (77.8–94.7) | |
By dengue infection status | |||||||
 Primary | 99/134 | 104/137 | 88/137 | 61/137 | 7/137 | 113/137 | 113/137 |
73.9 (65.6–81.1) | 75.9 (67.9–82.8) | 64.2 (55.6–72.2) | 44.5 (36.0–53.3) | 5.1 (2.1–10.2) | 82.5 (75.1–88.4) | 82.5 (75.1–88.4) | |
 Secondary | 40/89 | 47/90 | 31/90 | 42/90 | 56/90 | 59/90 | 74/90 |
44.9 (34.4–55.9) | 52.2 (41.4–62.9) | 34.4 (24.7–45.2) | 46.7 (36.1–57.5) | 62.2 (51.4–72.2) | 65.6 (54.8–75.3) | 82.2 (72.7–89.5) | |