Table 3 Type of blinding in randomized trials of oral health interventions (N = 540); N (%)
Component | Random allocation | Hypothesis | Details of intervention | Outcome assessment | Data analysis | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Yes | No | Unclear/NR | Yes | No | Unclear/NR | Yes | No | Unclear/NR | Yes | No | Unclear/NR | Yes | No | Unclear/NR | |
Participants | 194 (35.93) | 70 (12.96) | 276 (51.11) | 1 (0.19) | 12 (2.22) | 527 (97.59) | 2 (0.37) | 221 (40.93) | 317 (58.70) | 0 (0.0) | 71 (13.15) | 469 (86.85) | 0 (0.0) | 0 (0.0) | 540 (100.0) |
Assessors | 322 (59.63) | 15 (2.78) | 203 (37.59) | 1 (0.19) | 11 (2.04) | 528 (97.78) | 8 (1.48) | 37 (6.85) | 495 (91.67) | NA | NA | NA | 0 (0.0) | 0 (0.0) | 540 (100.0) |
Principal Investigator | 32 (5.93) | 10 (1.85) | 498 (92.22) | 0 (0.0) | 0 (0.0) | 540 (100.00) | 0 (0.0) | 0 (0.0) | 540 (100.0) | 1 (0.19) | 2 (0.37) | 533 (99.44) | 0 (0.0) | 0 (0.0) | 540 (100.0) |
Care-providers | 136 (25.19) | 351 (65.00) | 53 (9.81) | 2 (0.37) | 10 (1.85) | 528 (97.78) | 0 (0.0) | 0 (0.0) | 540 (100.0) | 1 (0.19) | 16 (2.96) | 523 (96.85) | 0 (0.0) | 0 (0.0) | 540 (100.0) |
Statisticians | 9 (1.67) | 3 (0.56) | 528 (97.78) | 1 (0.19) | 0 (0.0) | 539 (99.81) | 0 (0.0) | 0 (0.0) | 540 (100.0) | 0 (0.0) | 0 (0.0) | 540 (100.0) | NA | NA | NA |