article_snippet.sent: In terms of national average sleep quality, Slovakia topped the list.  
article_snippet.sent: More than half (58 per cent) of countries surveyed said More than half (58 per cent) of countries surveyed had the most restful sleep on this day .
article_snippet.sent: More than half (58 per cent) of the countries surveyed said More than half (58 per cent) of the countries surveyed had the most restful sleep on this day, with China recording the highest sleep quality in the world that night.
article_snippet.sent: In terms of national average sleep quality, Slovakia topped the list. 