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Table 3 Conclusions of Japanese studies compared with those of international HTA reports

From: An assessment of the characteristics and quality of diagnostic accuracy studies for positron emission tomography conducted in Japan: a systematic review

Diseases Number of studies Mean quality score Comparative study (%) Positive conclusion* (%) International HTA report Recommendation of PET use in oncology
Lung cancer 30 7.2 11 (37) 8 (27) (SNP, NCLC) Yes (SNP, NCLC)
Lymphoma 5 6 4 (80) 3 (60) × No
Head and neck cancer 12 6.7 5 (42) 5 (42) Yes
Colorectal cancer 8 6.6 3 (38) 4 (50) × No
Breast cancer 10 5.7 4 (40) 3 (30) × No
Esophageal cancer 4 8.8 3 (75) 1 (25) Lack of evidence No
Stomach cancer 4 5.8 2 (50) 3 (75) Lack of evidence -
Pancreatic cancer 6 8.7 4 (67) 4 (67) Unclear Yes
Cervical cancer 4 7.5 3 (75) 3 (75) Lack of evidence -
Ovarian cancer 4 6.3 4 (100) 3 (75) -
Uterine cancer 6 7.8 3 (50) 0 (0) Lack of evidence -
  1. *Positive: PET(/CT) was superior to other competitive diagnostic technologies.
  2. , evidence for diagnostic accuracy; ×, non-evidence for diagnostic accuracy; SNP, solitary pulmonary nodule; NCLC, non-small-cell lung cancer.