highly significantP = 4.8 × 10 −7
However, there was highly significant heterogeneity in the vitamin C effect between the trials with I 2 = 83% ( P = 4.8 × 10 −7 ).
However, there was highly significant heterogeneity in the vitamin C effect between the trials with I 2 = 83% ( P = 4.8 × 10 −7 ).