Table 1.

Levels of agreement and evidence

Statement	Level of agreement	Level of evidence
1.1–1.3	Full agreement	IV
2.1–2.3	Full agreement	V
3.1–3.3	Full agreement	III
4.1–4.4	Full agreement	V
5.1–5.4	Full agreement	IV
6.1, 6.2	Full agreement	IV
7.1–7.3	Full agreement	II
7.4	6.3	II
7.5	8.0	II
8.1–8.3	Full agreement	V
9.1, 9.2	Full agreement	V
10.1–10.3	Full agreement	II