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
| Â | 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) |