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. 2020 Sep 28;101(6):264–276. doi: 10.1111/iep.12372

TABLE 1.

Mean value and standard deviation (SD) of increase in root length (mm) and the percentage of increase in all groups

Groups

Subgroup A

(1 mo)

Subgroup B

(2 mo)

Subgroup C

(3 mo)

P‐value
Mean SD Mean SD Mean SD

Group I

(blood clot)

0.98aA

(9.7%)

0.08

1.21bA

(12.8%)

0.04

1.88cA

(17.3%)

0.10 ≤.001*

Group II

(EDTA + blood clot)

1.09aB

(10.1%)

0.06

1.34bB

(14.1%)

0.04

1.90cAB

(18.2%)

0.12 ≤.001*

Group III

(PRF)

1.20aC

(11.3%)

0.03

1.50bC

(15.8%)

0.06

1.95cAB

(18.6%)

0.07 ≤.001*

Group IV

(EDTA + PRF)

1.21aC

(11.4%)

0.07

1.58bD

(16.6%)

0.07

1.97cB

(18.9%)

0.08 ≤.001*

Group V

(positive control)

0.00

( 0%)

0.00

(0%)

0.00

(0%)

Group VI

(negative control)

1.31aD

(13.2%)

0.08

1.77bE

(17.8%)

0.12

2.10cC

(20.1%)

0.12 ≤.001*
P‐value ≤.001* ≤.001* ≤.001*

The same upper‐case letters within each column indicate insignificant difference.

The same lower‐case letters within each row indicate insignificant difference.

Abbreviation: NS, non‐significant.

*

Significant at P ≤ .05.