Table 3 Methods used in adjusted analysis
| Year of Publication |
2000 (n = 84) |
2006 (n = 113) |
|---|---|---|
| Continuous data | 65 (77.4%) | 81 (71.7%) |
| ANOVA/ANCOVA | 50 (76.9%) | 56 (69.1%) |
| Multiple regression method* | 7 (10.8%) | 19 (23.5%) |
| Stratified analysis | 1 (1.5%) | 0 |
| Other† | 6 (9.2%) | 6 (7.4%) |
| Not mentioned | 1 (1.5%) | 0 |
| Binary data | 13 (15.5%) | 19 (16.8%) |
| Logistic regression | 6 (46.1%) | 11 (57.9%) |
| Stratified analysis (Cochrane-Mantel-Haenszel test) | 5 (38.5%) | 5 (26.3%) |
| Other‡ | 2 (15.4%) | 3 (15.8%) |
| Ordinal data | 1 (1.2%) | 3 (2.6%) |
| Stratified analysis (Cochrane-Mantel-Haenszel test) | 1 (100%) | 1 (33.3%) |
| Nonlinear mixed effect model | 0 | 1 (33.3%) |
| Ordinal logistic regression | 0 | 1 (33.3%) |
| Time to event data | 5 (5.9%) | 10 (8.9%) |
| Cox proportional hazard | 5 (100%) | 9 (90.0%) |
| Stratified log rank test | 0 | 1 (10.0%) |