From: Systematic review of analytical methods applied to longitudinal studies of malaria
Method | All (n = 197) | 1996–2006 (n = 49) | 2007–2017 (n = 148) |
---|---|---|---|
N (%) | N (%) | N (%) | |
Descriptive statistics only | 17 (8.6) | 5 (10.2) | 12 (8.1) |
Contingency tables | 102 (51.8) | 32 (65.3) | 70 (47.3) |
Multiway tables | 50 (25.4) | 16 (32.7) | 34 (23.0) |
Epidemiologic statistics | 37 (18.8) | 12 (24.5) | 25 (16.9) |
t-tests | 82 (41.6) | 23 (46.9) | 59 (39.9) |
Analysis of variance | 18 (9.1) | 1 (2.0) | 17 (11.5) |
Simple linear regression | 6 (3.1) | 5 (10.2) | 1 (0.7) |
Non-parametric tests | 48 (24.4) | 11 (22.5) | 37 (25.0) |
Non-parametric correlation | 21 (10.7) | 3 (6.1) | 18 (12.2) |
Multiple regression | 71 (36.0) | 15 (30.6) | 56 (37.8) |
Poisson regression | 49 (24.9) | 8 (16.3) | 41 (27.7) |
Negative binomial regression | 22 (11.2) | 3 (6.1) | 19 (12.8) |
Survival analysis | |||
 Kaplan–Meier estimator | 59 (30.0) | 11 (22.5) | 48 (32.4) |
 Log-rank test | 36 (18.3) | 7 (14.3) | 29 (19.6) |
 Cox model | 62 (31.5) | 9 (18.4) | 53 (35.8) |
 Other survival methods | 4 (2.0) | 3 (6.1) | 1 (0.7) |
Longitudinal analysis | |||
 Generalized estimating equations | 41 (20.8) | 9 (18.4) | 32 (21.6) |
 Mixed-effects regression | 24 (12.2) | 2 (4.1) | 22 (14.9) |
Recurrent analysis | |||
 Shared frailty model | 2 (1.0) | – | 2 (1.4) |
 Andersen–Gill (AG) model | 4 (2.0) | – | 4 (2.7) |