Table 2. Characteristics of included projects (n = 345) with the total number of identified barriers and facilitators per project.
| Reference | Country | Partnership Type | Source of health data | Total Identified Barriers, n | Total Identified Facilitators, n |
|---|---|---|---|---|---|
| Aabakke et al. 2014 [28] | DKa | National | Health Services; Public Health; Other | 4 | 5 |
| Adam et al. 2010 [29] | CHb | National | Research | 5 | 7 |
| Agergaard et al. 2017 [30] | DK | National | Health Services | 3 | 6 |
| Agten et al. 2017 [31] | CH | National | Public Health | 1 | 3 |
| Ammundsen et al. 2012 [32] | DK | National | Health Services; Research | 3 | 6 |
| Andersen et al. 2011 [33] | DK | National | Health Services; Public Health | 4 | 8 |
| Andersen et al. 2014 [34] | DK | National | Health Services, Public Health | 2 | 4 |
| Andres et al. 2018 [35] | CH | National | Public Health | 4 | 3 |
| Annaheim et al. 2018 [36] | CH | National | Health Services; Other | 5 | 3 |
| Antonsen et al. 2011 [37] | DK | National | Public Health; Research | 2 | 2 |
| Antonsen et al. 2016 [38] | DK | National | Health Services; Public Health; Research | 2 | 12 |
| Arboe et al. 2016 [39] | DK | National | Health Services; Public Health; Other | 0 | 14 |
| Arking et al. 2014 [40] | CH | Cross-national | Research | 0 | 4 |
| Atladóttir et al. 2012 [41] | DK | National | Health Services; Public Health; Other | 1 | 4 |
| Aubert et al. 2016 [42] | CH | National | Health Services | 0 | 5 |
| Auer et al. 2014[43] | CH | National | Health Services; Public Health | 0 | 9 |
| Avillach et al. 2013 [44] | DK | Cross-national | Health Services; Public Health | 5 | 12 |
| Avlund et al. 2018 [45] | DK | National | Health Services; Public Health | 1 | 8 |
| Bachelet et al. 2016 [46] | DK | Cross-national | Health Services; Public Health; Research | 2 | 7 |
| Baker et al. 2009 [47] | DK | National | Health Services | 3 | 2 |
| Baldur-Felskov et al. 2013 [48] | DK | National | Health Services; Research | 2 | 5 |
| Balgobind et al. 2009 [49] | DK | Cross-national | Health Services; Research | 0 | 1 |
| Bay-Nielsen et al. 2008 [50] | DK | National | Public Health | 0 | 2 |
| Beduneau et al. 2017 [51] | CH | Cross-national | Health Services; Public Health | 1 | 6 |
| Begre et al. 2010 [52] | CH | National | Other | 2 | 4 |
| Bendixen et al. 2019 [53] | DK | National | Health Services; Public Health; Research; Other | 0 | 3 |
| Beretta-Piccoli et al. 2017 [54] | CH | National | Health Services; Public Health | 3 | 8 |
| Binderup et al. 2018 [55] | DK | National | Health Services; Research; Other | 2 | 5 |
| Bisgaard et al. 2013 [56] | DK | National | Health Services; Research | 0 | 5 |
| Bjerregaard and Larsen 2011 [57] | DK | National | Health Services; Public Health | 0 | 11 |
| Bjornholt et al. 2015 [58] | DK | National | Health Services; Public Health; Research | 1 | 9 |
| Blaha et al. 2016 [59] | DK | Cross-national | Health Services | 2 | 6 |
| Blenstrup and Knudsen 2011 [60] | DK | National | Health Services; Research | 1 | 3 |
| Blichert-Toft et al. 2008 [61] | DK | National | Health Services; Public Health; Research | 0 | 3 |
| Bodin et al. 2018 [62] | DK | Cross-national | Health Services; Public Health | 3 | 6 |
| Boje et al. 2014 [63] | DK | National | Public Health | 1 | 3 |
| Brenner et al. 2011 [64] | CH | National | Public Health | 1 | 6 |
| Brink et al. 2018 [65] | DK | National | Research | 5 | 6 |
| Burgstaller et al. 2016 [66] | CH | National | Health Services; Research | 0 | 6 |
| Cainzos-Achirica et al. 2018 [67] | DK | Cross-national | Health Services | 4 | 5 |
| Calhaz-Jorge et al. 2017 [68] | DK | Cross-national | Public Health; Other | 2 | 4 |
| Calvet et al. 2014 [69] | CH | Cross-national | Research | 2 | 3 |
| Carstensen et al. 2008 [70] | DK | National | Health Services | 0 | 4 |
| Caspersen et al. 2008 [71] | DK | National | Health Services; Public Health | 0 | 7 |
| Chaigne et al. 2017[72] | CH | National | Health Services | 0 | 5 |
| Chesnaye et al. 2014 [73] | DK | Cross-national | Public Health | 1 | 2 |
| Chmiel et al. 2011 [74] | CH | National | Health Services | 3 | 10 |
| Christensen et al. 2011 [75] | DK | National | Health Services; Public Health; Research | 0 | 2 |
| Christensen et al. 2011b [76] | DK | National | Public Health | 0 | 11 |
| Christensen et al. 2011c [77] | DK | National | Health Services; Public Health | 1 | 5 |
| Christensen et al. 2014 [78] | DK | National | Health Services; Public Health; Other | 1 | 8 |
| Christensen et al. 2016 [79] | DK | National | Public Health | 1 | 6 |
| Christensen et al. 2016b [80] | DK | National | Health Services; Public Health | 1 | 6 |
| Christiansen et al. 2008 [81] | DK | National | Public Health; Research | 1 | 5 |
| Christiansen et al. 2008b [82] | DK | National | Health Services; Public Health | 1 | 3 |
| Christoffersen et al. 2015 [83] | DK | National | Health Services; Public Health; Other | 1 | 5 |
| Coleman et al. 2011 [84] | DK | Cross-national | Public Health | 2 | 13 |
| Coloma et al. 2011 [85] | DK | Cross-national | Health Services | 5 | 9 |
| Corraini et al. 2017 [86] | DK | National | Public Health | 1 | 6 |
| Costantino et al. 2018 [87] | DK | Cross-national | Health Services; Other | 4 | 6 |
| Cotter et al. 2013 [88] | CH | Cross-national | Health Services; Research | 1 | 3 |
| Czauderna et al. 2016 [89] | CH | Cross-national | Research | 4 | 9 |
| Dalgard et al. 2010 [90] | DK | Cross-national | Research | 0 | 0 |
| Damgaard et al. 2013 [91] | DK | National | Public Health | 1 | 3 |
| Darby et al. 2013 [92] | DK | Cross-national | Health Services; Public Health | 1 | 4 |
| Dastani et al. 2012 [93] | CH | Cross-national | Research | 0 | 4 |
| De Angelis et al. 2009 [94] | Both | Cross-national | Research | 5 | 7 |
| De Groot et al. 2014 [95] | DK | Cross-national | Health Services; Public Health; Research | 4 | 1 |
| della Torre et al. 2012 [96] | CH | National | Health Services | 0 | 5 |
| Dencker et al. 2016 [97] | DK | National | Public Health | 1 | 1 |
| De Vos Andersen et al. 2017 [98] | DK | National | Health Services; Public Health; Other | 2 | 9 |
| Diel et al. 2010 [99] | CH | National | Health Services | 3 | 7 |
| Disanto et al. 2016 [100] | CH | National | Public Health | 0 | 11 |
| Donia et al. 2017 [101] | DK | National | Public Health; Research | 2 | 0 |
| Downs et al. 2016 [102] | DK | Cross-national | Public Health; Other | 1 | 2 |
| Dreyer et al. 2015 [103] | DK | Cross-national | Public Health; Other | 2 | 7 |
| Edgren et al. 2015 [104] | DK | Cross-national | Health Services; Public Health; Other | 1 | 6 |
| Ehlers et al. 2009 [105] | DK | National | Public Health; Other | 0 | 3 |
| Ekelund et al. 2015 [106] | DK | National | Health Services; Public Health | 1 | 12 |
| El-Galaly et al. 2015 [107] | DK | Cross-national | Public Health | 1 | 5 |
| Elliott et al. 2017 [108] | DK | National | Health Services | 1 | 2 |
| Engelberger et al. 2015 [109] | CH | National | Health Services; Public Health | 0 | 6 |
| Erdem et al. 2015 [110] | DK | Cross-national | Health Services; Other | 1 | 2 |
| Erichsen et al. 2010 [111] | DK | National | Health Services; Public Health; Research | 0 | 13 |
| Erichsen et al. 2011 [112] | DK | National | Health Services; Public Health | 1 | 4 |
| Erlangsen et al. 2008 [113] | DK | National | Public Health | 1 | 5 |
| Escala-Garcia et al. 2019 [114] | DK | Cross-national | Research | 2 | 2 |
| Escott-Price et al. 2014 [115] | CH | Cross-national | Research | 0 | 0 |
| Fagö-Olsen et al. 2012 [116] | DK | National | Public Health | 0 | 1 |
| Fahrner et al. 2014 [117] | CH | National | Health Services | 4 | 2 |
| Fedder et al. 2013 [118] | DK | National | Public Health | 2 | 5 |
| Fenger et al. 2016 [119] | DK | National | Public Health; Other | 1 | 5 |
| Fieten et al. 2018 [120] | CH | Cross-national | Research | 3 | 3 |
| Fløe et al. 2018 [121] | DK | National | Health Services; Other | 1 | 4 |
| Frandsen et al. 2014 [122] | DK | National | Health Services; Public Health | 2 | 5 |
| Frary et al. 2016 [123] | DK | National | Health Services; Public Health | 0 | 5 |
| Freiberg et al. 2017 [124] | Both | Cross-national | Health Services; Public Health | 0 | 3 |
| Friis et al. 2009 [125] | DK | National | Health Services; Public Health; Other | 1 | 4 |
| Funcke et al. 2016 [126] | CH | Cross-national | Health Services; Public Health | 1 | 7 |
| Furtwängler et al. 2018 [127] | CH | Cross-national | Health Services; Research | 1 | 4 |
| Gammelager et al. 2012 [128] | DK | National | Health Services; Public Health | 1 | 7 |
| Garcia-Etienne et al. 2019 [129] | CH | Cross-national | Health Services | 1 | 4 |
| Gatta et al. 2017 [130] | CH | Cross-national | Research | 1 | 1 |
| Gatzioufas et al. 2016 [131] | CH | Cross-national | Research | 0 | 4 |
| Geissbuhler 2013 [132] | CH | National | Health Services | 16 | 15 |
| Ghith et al. 2012 [133] | DK | National | Research; Other | 2 | 7 |
| Gjerstorff 2011 [134] | DK | National | Public Health | 1 | 7 |
| Glintborg et al. 2011 [135] | DK | National | Health Services; Public Health | 2 | 5 |
| Godballe et al. 2009 [136] | DK | National | Public Health | 0 | 5 |
| Gorski et al. 2015 [137] | CH | Cross-national | Research | 1 | 6 |
| Goutaki et al. 2017 [138] | Both | Cross-national | Health Services | 2 | 14 |
| Goutaki et al. 2019 [139] | CH | National | Health Services; Research | 4 | 10 |
| Gradel et al. 2008 [140] | DK | National | Health Services; Public Health | 0 | 5 |
| Grann et al. 2011 [141] | DK | National | Health Services; Public Health | 1 | 6 |
| Gratwohl et al. 2015 [142] | CH | Cross-national | Research | 0 | 4 |
| Gregersen et al. 2016 [143] | DK | National | Public Health | 3 | 6 |
| Griffin et al. 2011 [144] | DK | Cross-national | Health Service; Research; Other | 2 | 3 |
| Gromov et al. 2014 [145] | DK | National | Health Services | 0 | 5 |
| Gruber et al. 2018 [146] | CH | Cross-national | Health Services | 0 | 2 |
| Gudbrandsdottir et al. 2012 [147] | DK | National | Health Services; Other | 1 | 1 |
| Gulmez et al. 2009 [148] | DK | National | Health Services; Public Health | 0 | 4 |
| Gylvin et al. 2017 [149] | DK | National | Health Services; Research; Other | 1 | 3 |
| Hallas et al. 2012 [150] | DK | National | Health Services; Public Health | 3 | 6 |
| Hallas and Pottegard 2017 [151] | DK | National | Health Services; Public Health | 1 | 5 |
| Halmin et al. 2017 [152] | DK | Cross-national | Public Health | 0 | 4 |
| Hansen et al. 2008 [153] | DK | National | Health Services; Public Health | 1 | 8 |
| Hansen et al. 2012 [154] | DK | National | Health Services; Public Health | 2 | 4 |
| Hansen and Jacobsen 2014 [155] | DK | National | Health Services; Research | 1 | 6 |
| Hansen et al. 2018 [156] | DK | National | Health Services; Research; Other | 2 | 4 |
| Harshman et al. 2012 [157] | DK | Cross-national | Health Services; Public Health | 1 | 2 |
| Hatz et al. 2011 [158] | CH | National | Public Health | 1 | 6 |
| Haueis et al. 2012 [159] | CH | Cross-national | Research | 1 | 4 |
| Havelin et al. 2009 [160] | DK | Cross-national | Public Health | 3 | 6 |
| Head et al. 2013 [161] | DK | Cross-national | Health Services; Other | 3 | 5 |
| Helgstrand et al. 2010 [162] | DK | National | Health Services; Public Health | 0 | 7 |
| Helgstrand et al. 2012 [163] | DK | National | Health Services; Public Health; Other | 0 | 3 |
| Helqvist et al. 2012 [164] | DK | National | Health Services; Public Health | 0 | 3 |
| Helweg-Larsen 2011 [165] | DK | National | Public Health; Other | 1 | 3 |
| Hemkens et al. 2017 [166] | CH | National | Research | 0 | 5 |
| Henningsen et al. 2011 [167] | DK | National | Public Health | 0 | 4 |
| Henningsen et al. 2011b [168] | DK | Cross-national | Public Health | 4 | 8 |
| Henriksen et al. 2013 [169] | DK | National | Public Health | 0 | 3 |
| Herzberg et al. 2012 [170] | DK | National | Health Services | 1 | 3 |
| Hetland 2011 [171] | DK | National | Health Services; Other | 5 | 16 |
| Holland-Bill et al. 2014 [172] | DK | National | Health Services; Public Health | 1 | 8 |
| Horsdal et al. 2012 [173] | DK | National | Health Services; Public Health | 2 | 5 |
| Hyldig et al. 2019 [174] | DK | National | Health Services; Public Health; Research; Other | 1 | 5 |
| Ingeholm et al. 2016 [175] | DK | National | Health Services; Public Health; Other | 2 | 6 |
| Ittermann et al. 2018 [176] | DK | Cross-national | Research | 1 | 4 |
| Iversen et al. 2016 [177] | DK | National | Public Health | 1 | 8 |
| Jacobs et al. 2014 [178] | CH | Cross-national | Research | 0 | 11 |
| Jakobsen et al. 2017 [179] | DK | National | Public Health | 2 | 2 |
| Jensen et al. 2009 [180] | DK | National | Health Services; Public Health | 1 | 6 |
| Jensen et al. 2010 [181] | DK | National | Health Services; Public Health | 1 | 0 |
| Jensen et al. 2011 [182] | DK | National | Health Services | 2 | 6 |
| Jensen et al. 2016 [183] | DK | National | Public Health | 1 | 7 |
| Jensen et al. 2017 [184] | DK | National | Public Health | 1 | 1 |
| Jeppesen et al. 2016 [185] | DK | National | Health Services; Public Health | 2 | 5 |
| Johannesdottir et al. 2012 [186] | DK | National | Health Services; Public Health | 3 | 9 |
| Jørgensen et al. 2018 [187] | DK | National | Health Services; Public Health | 1 | 6 |
| Joshi et al. 2015 [188] | Both | Cross-national | Research | 1 | 6 |
| Kachuri et al. 2018 [189] | DK | Cross-national | Research | 0 | 2 |
| Kaltoft et al. 2009 [190] | DK | National | Health Services; Public Health | 2 | 3 |
| Karkov et al. 2010 [191] | DK | National | Health Services; Public Health; Other | 2 | 5 |
| Kent et al. 2015 [192] | DK | National | Health Services; Public Health; Other | 1 | 13 |
| Khanna et al. 2008 [193] | CH | National | Research | 1 | 1 |
| Khatami et al. 2016 [194] | Both | Cross-national | Health Services | 2 | 14 |
| Kiderlen et al. 2012 [195] | CH | Cross-national | Public Health | 3 | 2 |
| Kildemoes et al. 2011 [196] | DK | National | Health Services; Public Health | 1 | 8 |
| Kirwan et al. 2008 [197] | Both | Cross-national | Research | 2 | 12 |
| Klein et al. 2012 [198] | DK | National | Health Services; Public Health | 1 | 1 |
| Knudsen et al. 2013 [199] | DK | National | Health Services | 0 | 1 |
| Kowalska et al. 2011 [200] | DK | Cross-national | Health Services; Other | 4 | 4 |
| Kronborg et al. 2009 [201] | DK | National | Public Health; Other | 1 | 6 |
| Laenkholm et al. 2018 [202] | DK | National | Health Services; Public Health | 0 | 8 |
| Laguna et al. 2009 [203] | CH | Cross-national | Health Services | 0 | 3 |
| Landolt et al. 2016 [204] | CH | Cross-national | Research | 0 | 3 |
| Lang et al. 2019 [205] | CH | Cross-national | Research | 2 | 3 |
| Lange et al. 2017 [206] | DK | National | Health Services; Other | 0 | 5 |
| Laouali et al. 2018 [207] | DK | Cross-national | Public Health; Other | 1 | 6 |
| Larsen et al. 2016 [208] | DK | National | Public Health; Research | 2 | 3 |
| Larsen et al. 2016b [209] | DK | National | Health Services; Public Health | 3 | 5 |
| Laursen et al. 2018 [210] | DK | National | Health Services; Public Health; Research | 1 | 5 |
| Leboeuf-Yde et al. 2012 [211] | DK | National | Research; Other | 1 | 1 |
| Lehnert et al. 2018 [212] | DK | National | Public Health | 1 | 3 |
| Lildballe et al. 2014 [213] | DK | National | Health Services; Public Health | 0 | 2 |
| Linauskas et al. 2018 [214] | DK | National | Public Health | 7 | 4 |
| Lindhardsen et al. 2011 [215] | DK | National | Health Services | 1 | 7 |
| Lindhardsen et al. 2012 [216] | DK | National | Health Services; Other | 2 | 8 |
| Linnet et al. 2009 [217] | DK | National | Health Services; Public Health; Other | 2 | 7 |
| Liu et al. 2016 [218] | DK | National | Health Services; Public Health; Research | 1 | 7 |
| Lund et al. 2018 [219] | DK | National | Public Health | 4 | 8 |
| Lundstrøm et al. 2009 [220] | DK | National | Public Health | 3 | 5 |
| Luta et al. 2018 [221] | CH | National | Research | 0 | 6 |
| Lydiksen et al. 2014 [222] | DK | National | Health Services; Public Health | 0 | 3 |
| Lynge et al. 2011 [223] | DK | National | Health Services | 3 | 4 |
| Maeng et al. 2008 [224] | DK | National | Health Services; Public Health | 1 | 4 |
| Mahajan et al. 2018 [225] | DK | Cross-national | Research | 2 | 6 |
| Majholm et al. 2012 [226] | DK | National | Health Services; Public Health | 3 | 3 |
| Mareri et al. 2011 [227] | Both | Cross-national | Research | 0 | 4 |
| Margulis et al. 2017 [228] | DK | Cross-national | Public Health | 2 | 5 |
| May et al. 2014 [229] | CH | Cross-national | Research | 3 | 6 |
| Mejdahl et al. 2013 [230] | DK | National | Public Health; Other | 2 | 3 |
| Mellernkjær et al. 2014 [231] | DK | National | Health Services; Public Health | 0 | 1 |
| Messerli et al. 2016 [232] | CH | National | Public Health; Research | 0 | 6 |
| Mikkelsen et al. 2015 [233] | DK | National | Health Services; Other | 2 | 4 |
| Minnerup et al. 2015 [234] | CH | Cross-national | Health Services | 0 | 1 |
| Modvig et al. 2017 [235] | DK | National | Public Health | 0 | 5 |
| Möhring et al. 2019 [236] | CH | Cross-national | Research | 1 | 7 |
| Møller et al. 2008 [237] | DK | National | Public Health | 2 | 6 |
| Mors et al. 2011 [238] | DK | National | Health Services; Public Health | 0 | 9 |
| Mortensen et al. 2011 [239] | DK | National | Public Health; Research | 1 | 3 |
| Mortensen et al. 2013 [240] | DK | National | Health Services; Public Health | 0 | 2 |
| Mueller et al. 2015 [241] | CH | Cross-national | Research | 0 | 7 |
| Mukai et al. 2013 [242] | DK | National | Health Services; Public Health | 1 | 2 |
| Müller et al. 2012 [243] | CH | National | Other | 1 | 4 |
| Munk et al. 2012 [244] | DK | National | Public Health; Other | 0 | 6 |
| Narath et al. 2016 [245] | CH | Cross-national | Health Services; Research | 0 | 7 |
| Neelon et al. 2015[246] | DK | National | Public Health | 1 | 2 |
| Nickenig et al. 2014 [247] | Both | Cross-national | Health Services; Public Health | 2 | 4 |
| Nielsen et al. 2012 [248] | DK | National | Health Services; Public Health | 1 | 3 |
| Nielsen et al. 2015 [249] | DK | National | Health Services; Public Health | 2 | 2 |
| Nielsen et al. 2015b [250] | DK | National | Health Services; Public Health | 2 | 3 |
| Nielsen and Nordestgaard 2016 [251] | DK | National | Health Services; Public Health; Other | 1 | 3 |
| Nilsson et al. 2014 [252] | DK | National | Health Services; Public Health | 3 | 5 |
| Nolan-Kenney et al. 2019 [253] | CH | Cross-national | Research | 4 | 8 |
| Nørskov et al. 2015 [254] | DK | National | Public Health | 1 | 4 |
| Nørskov et al. 2017 [255] | DK | National | Public Health; Research | 1 | 4 |
| Nyholm et al. 2015 [256] | DK | National | Health Services; Public Health | 2 | 3 |
| Olsen et al. 2008 [257] | DK | National | Health Services; Public Health; Other | 3 | 4 |
| Olsen et al. 2013 [258] | DK | National | Public Health | 1 | 5 |
| Orsted et al. 2011[259] | DK | National | Public Health | 2 | 5 |
| Özcan et al. 2016 [260] | DK | National | Health Services | 2 | 10 |
| Pacurariu et al. 2015 [261] | DK | Cross-national | Public Health | 5 | 2 |
| Pagh et al. 2013 [262] | DK | National | Health Services; Other | 1 | 2 |
| Palnum et al. 2012 [263] | DK | National | Health Services; Public Health; Other | 2 | 6 |
| Pasternak et al. 2014 [264] | DK | National | Health Services; Public Health | 1 | 5 |
| Patadia et al. 2018 [265] | DK | Cross-national | Health Services; Research | 1 | 2 |
| Pattaro et al. 2016 [266] | Both | Cross-national | Research | 1 | 7 |
| Paulsen et al. 2013 [267] | DK | National | Public Health | 1 | 6 |
| Pechmann et al. 2019 [268] | CH | Cross-national | Research | 1 | 12 |
| Pedersen et al. 2010 [269] | DK | Cross-national | Health Services | 0 | 2 |
| Pedersen 2011 [270] | DK | National | Health Services; Public Health | 2 | 6 |
| Pedersen et al. 2011 [271] | DK | National | Health Services; Public Health | 0 | 4 |
| Perera et al. 2018 [272] | DK | Cross-national | Public Health | 3 | 1 |
| Perregaard et al. 2015 [273] | DK | National | Public Health | 2 | 3 |
| Petersen et al. 2018 [274] | DK | National | Public Health | 3 | 2 |
| Petersen et al. 2018b [275] | DK | National | Health Services; Public Health; Other | 1 | 3 |
| Piazza et al. 2010 [276] | CH | Cross-national | Health Services | 0 | 1 |
| Piltoft et al. 2017 [277] | DK | National | Public Health; Other | 0 | 4 |
| Pinborg et al. 2015 [278] | DK | National | Public Health | 0 | 4 |
| Pironi et al. 2017 [279] | DK | Cross-national | Health Services | 2 | 5 |
| Plüss-Suard et al. 2013 [280] | CH | National | Health Services | 1 | 3 |
| Pommergaard et al. 2014 [281] | DK | National | Health Services; Public Health | 3 | 3 |
| Pottegard et al. 2014 [282] | DK | National | Public Health | 0 | 9 |
| Pottegard et al. 2015 [283] | DK | National | Public Health | 2 | 6 |
| Poulsen et al. 2012 [284] | DK | National | Health Services | 2 | 4 |
| Poulsen et al. 2016 [285] | DK | National | Health Services; Public Health | 1 | 4 |
| Poulsen et al. 2018 [286] | DK | National | Health Services; Public Health | 1 | 6 |
| Preston et al. 2014 [287] | DK | National | Public Health | 0 | 5 |
| Prins et al. 2018 [288] | DK | Cross-national | Research | 0 | 6 |
| Pukkala et al. 2009 [289] | DK | Cross-national | Public Health | 2 | 6 |
| Radovanovic and Erne 2010 [290] | CH | National | Health Services | 3 | 12 |
| Ramlau-Hansen et al. 2009 [291] | DK | National | Health Services; Public Health | 2 | 3 |
| Rasmussen et al. 2012 [292] | DK | National | Public Health | 1 | 2 |
| Rasmussen and Tønnesen 2016 [293] | DK | National | Public Health; Other | 1 | 7 |
| Rasmussen et al. 2017 [294] | DK | National | Public Health; Other | 2 | 7 |
| Rathe 2015 [295] | DK | National | Health Services; Public Health | 0 | 7 |
| Reyes et al. 2016 [296] | DK | Cross-national | Public Health | 0 | 4 |
| Ringdal et al. 2011 [297] | Both | Cross-national | Research; Other | 6 | 8 |
| Roberto et al. 2016 [298] | DK | Cross-national | Health Services; Public Health; Research | 2 | 8 |
| Rudin et al. 2008 [299] | CH | National | Research | 0 | 5 |
| Rungby et al. 2017 [300] | DK | National | Health Services; Public Health | 2 | 6 |
| Russell et al. 2018 [301] | DK | Cross-national | Research | 2 | 5 |
| Schaefer et al. 2013 [302] | CH | National | Health Services | 0 | 4 |
| Schäfer et al. 2018 [303] | CH | Cross-national | Research; Other | 2 | 6 |
| Schatlo et al. 2012 [304] | CH | National | Health Services; Research | 0 | 4 |
| Schatorjé et al. 2014 [305] | CH | Cross-national | Research | 4 | 6 |
| Schmaal et al. 2017 [306] | CH | Cross-national | Health Services | 1 | 6 |
| Schmidt et al. 2010 [307] | DK | National | Public Health; Other | 0 | 4 |
| Schmidt et al. 2010b [308] | DK | National | Public Health | 0 | 8 |
| Schmidt et al. 2011 [309] | DK | National | Public Health | 0 | 4 |
| Schmidt et al. 2012 [310] | DK | National | Public Health | 0 | 5 |
| Schmidt et al. 2012b [311] | DK | National | Public Health | 2 | 5 |
| Schmidt et al. 2014 [312] | DK | National | Public Health; Other | 1 | 11 |
| Schmidt et al. 2018 [313] | DK | National | Health Services | 1 | 11 |
| Schneeberger et al. 2013 [314] | Both | Cross-national | Health Services | 0 | 3 |
| Schoos et al. 2015 [315] | DK | National | Public Health; Other | 0 | 4 |
| Schroll et al. 2012 [316] | DK | National | Health Services | 1 | 4 |
| Schuemie et al. 2012 [317] | DK | Cross-national | Health Services; Public Health | 2 | 6 |
| Sejbaek et al. 2013 [318] | DK | National | Public Health; Research | 0 | 4 |
| Skyum et al. 2018 [319] | DK | National | Health Services; Other | 3 | 4 |
| Skyum et al. 2019 [320] | DK | Cross-national | Health Services; Research | 2 | 7 |
| Soerensen et al. 2014 [321] | DK | National | Health Services; Public Health | 1 | 7 |
| Sommer et al. 2018 [322] | CH | National | Research | 2 | 6 |
| Sørensen et al. 2009 [323] | DK | National | Public Health | 1 | 1 |
| Sørensen et al. 2013 [324] | DK | National | Health Services; Public Health | 1 | 6 |
| Spoerri et al. 2010 [325] | CH | National | Public Health | 1 | 3 |
| Stahl Madsen et al. 2014 [326] | DK | National | Health Services | 0 | 3 |
| Steenholdt et al. 2014 [327] | DK | National | Public Health; Research | 1 | 6 |
| Stewardson et al. 2016 [328] | CH | Cross-national | Health Services | 1 | 9 |
| Strasser et al. 2016 [329] | CH | National | Research | 1 | 7 |
| Streit et al. 2014 [330] | CH | National | Health Services | 2 | 4 |
| Strnad et al. 2016 [331] | CH | Cross-national | Research | 0 | 6 |
| Stukalin et al. 2018 [332] | DK | Cross-national | Health Services; Public Health | 1 | 3 |
| Sürder et al. 2013 [333] | CH | National | Research | 1 | 4 |
| Suttorp et al. 2018 [334] | CH | Cross-national | Research | 0 | 6 |
| Svendsen et al. 2013 [335] | DK | National | Health Services; Public Health | 0 | 2 |
| Talman et al. 2008 [336] | DK | National | Health Services; Public Health | 0 | 3 |
| Thillemann et al. 2009 [337] | DK | National | Public Health | 0 | 4 |
| Thomsen et al. 2008 [338] | DK | National | Health Services; Public Health | 0 | 5 |
| Thornqvist et al. 2014 [339] | DK | National | Health Services; Public Health | 2 | 6 |
| Thøstesen et al. 2015 [340] | DK | National | Public Health; Research; Other | 0 | 4 |
| Thygesen et al. 2011 [341] | DK | National | Health Services; Public Health | 0 | 5 |
| Tollånes et al. 2016 [342] | DK | Cross-national | Health Services; Public Health; Research | 2 | 7 |
| Trabert et al. 2014 [343] | DK | Cross-national | Research | 4 | 4 |
| Tutolo et al. 2019 [344] | CH | Cross-national | Health Services | 1 | 3 |
| Tvedskov et al. 2011 [345] | DK | National | Health Services; Public Health | 2 | 5 |
| Tvedskov et al. 2015 [346] | DK | National | Health Services; Public Health | 1 | 5 |
| Ulff-Moller et al. 2018 [347] | DK | National | Health Services; Public Health; Research; Other | 2 | 6 |
| Underbjerg et al. 2013 [348] | DK | National | Health Services; Public Health | 2 | 6 |
| Underbjerg et al. 2015 [349] | DK | National | Public Health | 0 | 5 |
| Ungaro et al. 2019 [350] | DK | Cross-national | Public Health | 3 | 6 |
| Usvyat et al. 2013 [351] | Both | Cross-national | Health Services | 8 | 4 |
| Vach et al. 2018 [352] | CH | National | Health Services; Research; Other | 2 | 4 |
| Van Hedel et al. 2018 [353] | CH | Cross-national | Health Services | 3 | 7 |
| Van Stralen et al. 2011 [354] | Both | Cross-national | Research | 1 | 3 |
| Vasan et al. 2016 [355] | DK | Cross-national | Public Health | 0 | 5 |
| Vester-Andersen et al. 2014 [356] | DK | National | Health Services; Public Health | 0 | 6 |
| Vest-Hansen et al. 2014 [357] | DK | National | Public Health | 1 | 5 |
| Viberg et al. 2018 [358] | DK | National | Health Services; Public Health | 0 | 5 |
| Villadsen et al. 2011 [359] | DK | National | Health Services; Public Health | 2 | 3 |
| Walters et al. 2013 [360] | DK | Cross-national | Public Health | 5 | 4 |
| Weber et al. 2013 [361] | CH | National | Health Services | 11 | 5 |
| Weigang et al. 2010 [362] | CH | Cross-national | Health Services | 1 | 3 |
| Wiegand et al. 2014 [363] | CH | Cross-national | Research | 1 | 6 |
| Wildgaard et al. 2011 [364] | DK | National | Health Services; Public Health | 1 | 2 |
| Winterfeld et al. 2013 [365] | Both | Cross-national | Health Services | 1 | 4 |
| Wurtzen et al. 2013 [366] | DK | National | Health Services; Research | 0 | 6 |
| Ylijoki-Sorensen et al. 2014 [367] | DK | Cross-national | Public Health | 4 | 4 |
| Zalfani et al. 2012 [368] | CH | National | Health Services; Public Health | 0 | 4 |
| Zecca et al. 2018 [369] | CH | National | Health Services | 2 | 4 |
| Zellweger et al. 2014 [370] | CH | National | Health Services; Other | 2 | 5 |
| Zellweger et al. 2019 [371] | CH | National | Public Health | 1 | 5 |
| Zwisler et al. 2016 [372] | DK | National | Health Services; Public Health | 0 | 10 |
a DK: Denmark
b CH: Switzerland