Duration (yrs)

Mean

S.D

ā€œpā€ value

<3 yrs (n = 10)

1.5360

0.1670

p = 0.0001*

4 - 6 yrs (n = 21)

1.2621

0.2846

7 - 9 yrs (n = 10)

1.044

0.1194

>10 yrs (n = 9)

1.015

0.1208