Table 3.

Summary quality sum score

Conclusions	Quality sum score ≤ 9	Quality sum score 10-14	Quality sum score ≥ 15
0-10% under-reporting	1	5	1
Fairly reliable suicide statistics	0	5	1
11-30% under-reporting	0	3	1
> 30% under-reporting	4	6	0
Poor suicide statistics	1	1	0

The two studies were they exchanged data between countries (Ross O. et al. [12] and Atkinson M.W. et al. [10]) are not included in this table.