TABLE 6.

Bivariate meta-regression analysis between logit sensitivity and the additional covariates for centers with 100% specificitya

CovariatetP
Compliant extraction method 2.69 0.018
Blood vol used0.220.829
RCLB1.120.285
WCLB2.080.058
NaOH1.590.137
Beads 2.59 0.023
Purification1.140.274
More than nine manual steps0.460.650
ITS1.540.148
18S−1.890.082
28S0.480.637
Internal control PCR 2.85 0.015
Elution vol−0.750.469
  • a n = 15 centers. t, slope/standard error of the slope. A positive t value indicates a favorable correlation and vice versa. Significant correlations are indicated by a P value of <0.05 and are indicated in boldface.