Table 2
Summary of the statistical methods in JAMIA and IJMI articles (2000–2007)
| Type of test | JAMIA (n=305) | IJMI (n=532) |
| No (%) | No (%) | |
| No statistics | 55 (18%) | 189 (36%) |
| Descriptive statistics | 216 (71%) | 328 (62%) |
| Elementary statistics | 129 (42%) | 119 (22%) |
| χ2 Analysis | 56 (18%) | 49 (9%) |
| t Test | 52 (17%) | 44 (8%) |
| Kaplan–Meier analysis | 2 (1%) | 0 (0%) |
| Wilcoxon rank sum test | 24 (8%) | 22 (4%) |
| Sign test | 1 (0%) | 1 (0%) |
| Fisher exact test | 12 (4%) | 9 (2%) |
| Analysis of variance | 37 (12%) | 32 (6%) |
| Correlation | 51 (17%) | 41 (8%) |
| Multivariable statistics | 38 (12%) | 31 (6%) |
| Multiple logistic regression | 23 (8%) | 18 (3%) |
| Multiple linear regression | 15 (5%) | 10 (2%) |
| Principal-component analysis | 4 (1%) | 5 (1%) |
| Other regression analyses | 9 (3%) | 4 (1%) |
| Data mining/machine learning | 28 (9%) | 32 (6%) |
| Support vector machines | 6 (2%) | 4 (1%) |
| Bayesian network | 12 (4%) | 7 (1%) |
| Neural networks | 1 (0%) | 9 (2%) |
| Decision trees | 8 (3%) | 9 (2%) |
| Clustering | 2 (1%) | 4 (1%) |
| Hidden Markov Monte Carlo | 4 (1%) | 5 (1%) |
| Other statistics | 73 (24%) | 68 (13%) |
| Relative risk/risk ratio | 7 (2%) | 3 (1%) |
| Sensitivity/specificity, precision/recall | 63 (21%) | 62 (12%) |
| Fuzzy logic | 1 (0%) | 2 (0%) |
| Latent semantic analysis | 2 (1%) | 1 (0%) |
| Fourier transform/time series | 3 (1%) | 1 (0%) |
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Classification format adapted from Windish et al.1
