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2597 Studies found for: sleep AND Pittsburgh Sleep Quality Index AND quality of sleep

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Map Legend
Source:https://ClinicalTrials.gov
Region Name Number of Studies
World [map] 2,597
Europe 636
Austria 12 [studies]
Belgium 40 [studies]
Bulgaria 9 [studies]
Croatia 3 [studies]
Denmark 74 [studies]
Estonia 1 [studies]
Finland 6 [studies]
France 74 [studies]
Germany 72 [studies]
Greece 10 [studies]
Hungary 4 [studies]
Iceland 4 [studies]
Ireland 16 [studies]
Italy 45 [studies]
Lithuania 1 [studies]
Luxembourg 2 [studies]
Netherlands 37 [studies]
Norway 17 [studies]
Poland 15 [studies]
Portugal 8 [studies]
Romania 2 [studies]
Slovakia 2 [studies]
Slovenia 2 [studies]
Spain 120 [studies]
Sweden 12 [studies]
Switzerland 41 [studies]
United Kingdom 86 [studies]
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Studies with no locations are not included in the counts or on the map.

Studies with multiple locations are included in each region containing locations.