Table 9.

Meta-regression estimates for the association of length of time that beef was aged before evaluation, length of time that cattle were fed, use of multiple HGP implants (yes or no), and treatment comparisons using TBA (yes or no) on connective tissue responses

Variable	SMD	SE	95% CI	P-value	R 2	I 2, %	τ2
Aging of beef, d	0.005	0.377	−0.076 to 0.086	0.900	−28.80	38.53	0.277
Length of feeding, d	−0.009	0.006	−0.021 to 0.003	0.115	6.8	28.3	0.200
Multiple implants, % of studies	0.729	0.611	−0.582 to 2.040	0.253	1.89	33.43	0.211
TBA, % of studies	0.063	0.436	−0.872 to 0.998	0.887	−16.77	38.31	0.251

The estimates are based on Knapp–Hartung methods and provide a SMD, SE, and 95% CI of the ES, significance (P-value), model fit (R²), and measures of heterogeneity I² and τ². There were 16 treatment comparisons and 4 experiments.