Table 1 Criteria for referral to medical centres according to length of the questionnaire.

Dimension	Full questionnaire	Abridged questionnaire
Symptoms	⩾5 mild or combinations of mild and moderate; ⩾3 moderate; at least 1 severe symptom	At least 3 mild or moderate symptoms or at least 1 severe symptom.
GHQ	GHQ‐12 score 4/5	GHQ‐4 score 1/2
PTSD	17 items score of 50 or more	14 items score > 40