Type of journal of publication (ref cardiology) | | | | |
Medicine in general | 0.96 (0.26 to 3.53) | 0.955 | 1.00 (0.21 to 4.69) | 0.997 |
Epidemiology/public health | 3.59 (0.47 to 27.73) | 0.220 | 5.41 (0.59 to 49.56) | 0.135 |
Other specialties | 0.14 (0.02 to 0.96) | 0.045 | 0.12 (0.01 to 1.13) | 0.064 |
Cochrane Library | 0.06 (0.01 to 0.69) | 0.024 | – | – |
Statistician among the authors (ref no) | 3.59 (0.89 to 14.45) | 0.072 | 3.84 (0.73 to 20.23) | 0.112 |
Number of primary studies* | 5.40 (1.36 to 21.44) | 0.017 | 1.23 (0.33 to 4.60) | 0.761 |
Use of several databases (ref 2): | | | | |
3 | 5.51 (1.07 to 28.41) | 0.041 | 11.71 (1.16 to 118.1) | 0.037 |
⩾4 | 8.58 (1.73 to 42.62) | 0.009 | 7.89 (1.00 to 62.13) | 0.050 |
Heterogeneity ascertainment (ref no) | 5.01 (0.46 to 54.36) | 0.190 | 5.14 (0.38 to 68.72) | 0.216 |
Type of studies (ref experimental) | 3.60 (1.04 to 12.49) | 0.044 | 3.61 (0.79 to 16.43) | 0.096 |
Year of publication (ref ⩽1998): | | | | |
2000 | 7.14 (1.50 to 33.96) | 0.014 | 12.47 (1.83 to 84.79) | 0.010 |
2002 | 5.73 (1.16 to 28.36) | 0.032 | 6.18 (0.87 to 43.65) | 0.068 |
Statistical model (random or fixed effects) mentioned (ref no) | 4.17 (0.84 to 20.65) | 0.080 | 2.91 (0.45 to 18.93) | 0.264 |