Table 1

Risk frequency and various verbal descriptors

Frequency range (1 in)

EU descriptors

Calman verbal scale

Calman descriptive scale

Paling perspective scale


1–9

Very common

Very high

10–99

Common

High

Frequent, significant

High

100–999

Uncommon

Moderate

Moderate

1,000–9,999

Rare

Low

Tolerable, reasonable

Low

10,000–99,999

Very rare

Very low

Very low

100,000–999,999

Minimal

Acceptable

Minimal

1,000,000–9,999,999

Negligible

Insignificant, safe

Negligible


Data are taken from [41] and other sources. EU, European Union.

Moore et al. Arthritis Research & Therapy 2008 10:R20   doi:10.1186/ar2373

Open Data