Table 2. Results of a generalized linear model with the proportion of significant p-values in each paper as the response variable and binomial errors.
Note that the predictor and response variables were rescaled to have a mean of 0 and standard deviation of 0.5 prior to running the model [37]. The effects of each FoR category are shown relative to the reference level “Agricultural and Veterinary Sciences.” The 95% CIs for each parameter were estimated as ±1.96 * SE.
| Parameter | Estimate | SE | Estimate 95% CIs | t | p |
|---|---|---|---|---|---|
| Intercept | 1.29 | 0.07 | 1.16 to 1.43 | 18.5 | <0.0001 |
| Blindness | -0.12 | 0.03 | -0.18 to -0.061 | -3.95 | <0.0001 |
| Number of authors | |||||
| Linear effect | 0.42 | 0.03 | 0.36 to 0.48 | 14.3 | <0.0001 |
| Quadratic effect | -0.085 | 0.01 | -0.11 to -0.058 | -6.30 | <0.0001 |
| Year of publication | -0.10 | 0.02 | -0.15 to -0.052 | -4.09 | <0.0001 |
| FoR category | |||||
| Biological sciences | -0.30 | 0.08 | -0.45 to -0.15 | -3.93 | <0.0001 |
| Medical and health sciences | -0.062 | 0.07 | -0.20 to 0.080 | -0.86 | 0.39 |
| Multidisciplinary | -0.28 | 0.07 | -0.42 to -0.14 | -3.90 | 0.0001 |
| Psychology and cognitive sciences | -0.28 | 0.08 | -0.44 to -0.12 | -3.45 | 0.0002 |