highly significantp < 0·001
However, residual heterogeneity remained (τ 2 = 0·280, I 2 = 90·3%), with the test for residual heterogeneity being highly significant (QE = 167·68, df = 23, p < 0·001).
However, residual heterogeneity remained (τ 2 = 0·280, I 2 = 90·3%), with the test for residual heterogeneity being highly significant (QE = 167·68, df = 23, p < 0·001).