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Table 4 Breakdown of positive and negative test results on HC2, cobas, and APTIMA, by the number and risk level of HPV genotypes detected on CLART

From: Cross-reactivity profiles of hybrid capture II, cobas, and APTIMA human papillomavirus assays: split-sample study

Risk level of detected genotypes

Number of genotypes

HC2

cobas

APTIMA

Negative test result

Positive test result

Total

Negative test result

Positive test result

Total

Negative test result

Positive test result

Total

Only low-risk

1

410 (84 %)

79 (16 %)

489

390 (89 %)

47 (11 %)

437

412 (94 %)

25 (6 %)

437

2

72 (80 %)

18 (20 %)

90

66 (85 %)

12 (15 %)

78

73 (94 %)

5 (6 %)

78

3

18 (69 %)

8 (31 %)

26

16 (84 %)

3 (16 %)

19

16 (84 %)

3 (16 %)

19

≥4

6 (60 %)

4 (40 %)

10

10 (100 %)

0 (0 %)

10

8 (80 %)

2 (20 %)

10

Total

506 (82 %)

109 (18 %)

615

482 (89 %)

62 (11 %)

544

509 (94 %)

35 (6 %)

544

Only high-risk

1

245 (50 %)

242 (50 %)

487

143 (27 %)

396 (73 %)

539

319 (59 %)

220 (41 %)

539

2

19 (10 %)

169 (90 %)

188

8 (5 %)

146 (95 %)

153

45 (29 %)

109 (71 %)

153

3

3 (6 %)

45 (94 %)

48

1 (2 %)

53 (98 %)

54

13 (24 %)

41 (76 %)

54

≥4

0 (0 %)

12 (100 %)

12

0 (0 %)

18 (100 %)

17

1 (6 %)

17 (94 %)

17

Total

267 (36 %)

468 (64 %)

735

152 (20 %)

613 (80 %)

765

378 (49 %)

387 (51 %)

765

Low-risk and high-risk

2

72 (46 %)

86 (54 %)

158

42 (20 %)

162 (79 %)

205

106 (52 %)

98 (48 %)

205

3

38 (25 %)

116 (75 %)

154

16 (10 %)

139 (90 %)

155

56 (36 %)

99 (64 %)

155

≥4

19 (9 %)

196 (91 %)

215

2 (1 %)

207 (99 %)

210

46 (22 %)

163 (78 %)

210

Total

129 (24 %)

398 (76 %)

527

60 (11 %)

508 (89 %)

568

208 (37 %)

360 (63 %)

568

No genotypes

0

3096 (98 %)

49 (2 %)

3145

2981 (95 %)

162 (5 %)

3143a

3089 (98 %)

56 (2 %)

3145

Total

–

–

–

5022

–

–

5020a

–

–

5022

  1. aTwo samples had an invalid test result on cobas. For both samples, HC2 and APTIMA test results were negative; CLART detected no genotypes; cytology on one sample was normal, and inadequate on the other sample