Table 1

Validity of estimates of the mean effect size

Publication biasNτ2I2 (%)BiasMSE
None100.02170.000.01
None100.12560.000.03
None100.90900.000.11
None200.02170.000.01
None200.12560.000.01
None200.90900.000.05
None500.02170.000.00
None500.12560.000.01
None500.90900.000.02
None1000.02170.000.00
None1000.12560.000.00
None1000.90900.000.01
RR=4100.02170.070.02
RR=4100.12560.160.06
RR=4100.90900.500.36
RR=4200.02170.060.01
RR=4200.12560.160.04
RR=4200.90900.490.30
RR=4500.02170.060.01
RR=4500.12560.160.03
RR=4500.90900.490.27
RR=41000.02170.060.01
RR=41000.12560.160.03
RR=41000.90900.490.25
RR=10100.02170.160.05
RR=10100.12560.340.15
RR=10100.90900.830.78
RR=10200.02170.160.04
RR=10200.12560.340.13
RR=10200.90900.830.73
RR=10500.02170.160.03
RR=10500.12560.340.12
RR=10500.90900.830.71
RR=101000.02170.160.03
RR=101000.12560.340.12
RR=101000.90900.830.70
  • All estimates were based on 10 000 samples.

  • Bias, the average estimate of the mean effect size; MSE, mean squared error.