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Table 2 Study design, data source, and level of evidence of 628 publications on diseases/conditions and health system research in Cambodia, PUBLICAM study, 2000 to 2012

From: Gaps between research and public health priorities in low income countries: evidence from a systematic literature review focused on Cambodia

  All On diseases/conditions only On health system only On both
n(%) n(%) n(%) n(%)
All 628 (100.0) 440 (100.0) 53 (100.0) 135 (100.0)
Study design
  Descriptive research 426 (67.8) 282 (64.1) 44 (83.0) 100 (74.1)
  Implementation research 103 (16.4) 63 (14.3) 9 (17.0) 31 (23.0)
  Fundamental research 99 (15.8) 95 (21.6) 0 4 (3.0)
Data source
  Original 490 (78.0) 370 (84.1) 37 (69.8) 83 (61.5)
  Derivative 49 (7.8) 23 (5.2) 4 (7.5) 22 (16.3)
  Non-original 52 (8.3) 25 (5.7) 9 (17.0) 18 (13.3)
  Unknown/non-appropriatea 39 (6.2) 22 (5.0) 3 (3.7) 12 (8.9)
Level of evidence
  Systematic reviews and RCT 27 (4.3) 21 (4.8) 1 (1.9) 5 (3.7)
  Non-randomized interventions 11 (1.8) 6 (1.4) 1 (1.9) 4 (3.0)
  Observational and non-systematic reviews 550 (87.6) 394 (89.6) 47 (88.7) 109 (80.7)
  Expert opinions 13 (2.1) 7 (1.6) 2 (3.8) 4 (3.0)
  Othersb 27 (4.3) 12 (2.7) 2 (3.8) 13 (9.6)
  1. aData source was classified as non-appropriate for articles presenting study protocols.
  2. bOther types of publications include study protocols and unknown type (when the abstract contained only few words).