extremely significantp -value < 2.2 × 10 −16
The difference between the electrolytic approach (test groups 1, 3, and 5) and PSS (control groups 2, 4, and 6) was statistically extremely significant ( p -value < 2.2 × 10 −16 ).
The difference between the electrolytic approach (test groups 1, 3, and 5) and PSS (control groups 2, 4, and 6) was statistically extremely significant ( p -value < 2.2 × 10 −16 ).