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Table 1 Description of included studies

From: A systematic review on the use of healthcare services by undocumented migrants in Europe

  N = 29
  n (%) References
General characteristics of the study
 Receiving countries
  Italy 6 (21) [16, 20,21,22, 30, 32]
  Denmark 2 (7) [13, 36]
  England 1 (3) [15]
  Switzerland 2 (7) [31, 34]
  Germany 4 (14) [21, 23, 24, 37]
  France 1 (3) [35]
  The Netherlands 5 (17) [18, 19, 25, 26, 29]
  Portugal 2 (7) [11, 12]
  Spain 2 (7) [14, 38]
  Belgium 1 (3) [17]
  Multi-country analysisa 1 (3) [27]
  Multi-country analysisb 2 (10) [28, 39]
 Type of health services
  Primary healthcare services 19 (66) [11,12,13,14,15,16,17,18,19,20,21, 23, 25,26,27, 29, 36,37,38]
  Hospital services 19 (66) [11, 12, 14,15,16,17, 23, 24, 27, 29,30,31,32,33,34,35,36,37,38]
  Outpatient specialist services 17 (59) [12, 14,15,16, 18, 19, 23, 24, 26,27,28,29, 34, 36,37,38,39]
  A&E services 15 (48) [11, 12, 14,15,16,17,18, 23, 26, 27, 33, 35,36,37,38]
  Not defined 1 (3) [17]
Characteristics of undocumented migrants in the study
 Number of undocumented migrants included
  Up to 100 6 (21) [14, 15, 17, 36, 38, 39]
  Between 100 and 1000 18 (62) [11,12,13, 16,17,18,19, 23,24,25,26,27,28,29, 32,33,34,35]
  Over 1000 5 (17) [20, 21, 30, 31, 37]
 Percentage of undocumented migrants of total sample size
  0–9 4 (14) [31,32,33, 39]
  10–49 8 (28) [11, 12, 17, 19, 24, 28, 35, 38]
  50–99 2 (7) [25, 37]
  100 15 (52) [13,14,15,16,17,18, 20, 23, 26, 27, 29, 30, 34,35,36]
 Information on place of birth
  Specific country of birth 6 (21) [14, 16, 17, 21, 35, 36]
  Specific region of birth 13 (45) [12, 13, 20, 23, 24, 26, 29,30,31,32,33,34,35]
  Country and region of birth 5 (17) [11, 18, 25, 37, 38]
  Non-specific 5 (18) [15, 17, 27, 28, 39]
 Information on type of migration
  Yes 6 (21) [14, 18, 26, 34,35,36]
  No 23 (79) [11,12,13, 15,16,17, 19,20,21,22,23,24,25, 27,28,29,30,31,32,33, 37,38,39]
Methodological characteristics
 Study design
  Quantitative 20 (69) [11,12,13, 16,17,18,19,20,21,22, 25, 26, 28,29,30,31,32,33,34,35, 37, 38]
  Cross-sectional 18 (62) [11,12,13, 16, 17, 19,20,21,22, 28,29,30,31,32,33, 35, 37, 38]
  Cohort 2 (7) [25, 34]
  Qualitative 7 (24) [14, 15, 23, 24, 27, 36, 39]
  Mixed methods 2 (7) [18, 26]
 Data source
  Registry 9 (31) [13, 19,20,21,22, 25, 30, 32, 37]
  Survey 8 (28) [11, 12, 16, 17, 28, 34, 35, 38]
  Registry and survey 3 (10) [29, 31, 33]
  Interview 4 (14) [14, 15, 27, 39]
  Observation 0 (0)  
  Interview and observation 3 (10) [23, 24, 36]
  Multiple data sources 2 (7) [18, 26]
 Adjustment
  Defined 13 (45) [11, 12, 18,19,20, 22, 25, 29, 31,32,33,34,35]
  Not done/not applicable 16 (55) [13,14,15,16,17, 21, 23, 24, 26,27,28, 30, 36,37,38,39]
  1. aIncludes Finland, Sweden, Austria, Belgium, Denmark, Germany, Greece, Hungary, Lithuania, Poland, the UK, France, Italy, the Netherlands, Portugal and Spain
  2. bIncludes Austria, Belgium, Czech Republic, France, Italy, Germany, Hungary, Ireland, The Netherlands, Poland, Portugal, Spain, Sweden and the UK