Table 2.

Logistic Regression Coefficients.

Predictor	Odds Ratio (95% CI)	P Value
Observe a treatment estimate of the first trial to be included in meta-analysis confidence interval
Range of publication years	1.06 (0.95 to 1.20)	0.31
No. of trials	0.85 (0.73 to 0.96)	0.02
Risk of bias	1.50 (0.63 to 3.69)	0.37
Hosmer-Lemeshow goodness-of-fit test: χ2 = 11.25, df = 8, P = 0.19
Observing an overlap between the first trial’s confidence interval and meta-analysis prediction interval a
Range of publication years	0.85 (0.61 to 1.19)	0.34
No. of trials	0.78 (0.63 to 0.97)	0.03
Risk of bias	1.07 (0.04 to 27.34)	0.97
Hosmer-Lemeshow goodness of fit test: χ2 = 1.13, df = 8, P > 0.99

^aEstimates from penalized logistic regression.