Table 6 Frequency of referrals for direct access CT grouped based on clinical criteria from NICE 2005 guidelines. Odds ratio with 95%CI/PPV for each criteria of NICE 2005 guidelines for the presence of a brain tumour
Brain tumour | ||||||||
|---|---|---|---|---|---|---|---|---|
Total | Absent | Present | ||||||
Freq | % | Freq | % | Odds ratio | 95% CI | PPV | ||
Symptoms related to the CNS | 1150 | 1117 | 97 | 33 | 3.0 | 5.21 | 1.81–14.92 | 2.9 |
Headache & features of raised ICP | 473 | 469 | 99 | 4 | 1 | 1.65 | 0.41–6.67 | 0.8 |
Sub-acute deficits focal/personality/cognitive/behavioural | 525 | 524 | 99 | 1 | < 1 | 0.31 | 0.03–2.79 | 0.2 |
Simple headache | 790 | 786 | 99 | 4 | 1 | reference | 0.5 | |