highly significantp < 0.0001
Two-tailed test of independence indicated that the associations between the mortality and PBO pre-exposure are highly significant (χ 2 = 134.104, df = 1, p < 0.0001).
Two-tailed test of independence indicated that the associations between the mortality and PBO pre-exposure are highly significant (χ 2 = 134.104, df = 1, p < 0.0001).