Table 2 Fractal dimensions (FD), as measured by rater 1 (R1) at baseline (T0) and at T1 = T0 + 15 days (intra-rater agreement).

From: Novel method to delineate palatal rugae and assess their complexity using fractal analysis

Model no

FD (R1) at T0

FD (R1) at T1

Average

Difference

1

1.4578

1.4615

1.4597

0.0037

2

1.4806

1.4843

1.4825

0.0037

3

1.3057

1.3030

1.3044

− 0.0027

4

1.4040

1.4065

1.4053

0.0025

5

1.3101

1.3087

1.3094

− 0.0014

6

1.4699

1.4702

1.4701

0.0003

7

1.4089

1.4048

1.4069

− 0.0041

8

1.4776

1.4756

1.4766

− 0.0020

9

1.4239

1.4245

1.4242

0.0006

10

1.4916

1.4914

1.4915

− 0.0002

11

1.4087

1.4089

1.4088

0.0002

12

1.2757

1.2725

1.2741

− 0.0032

13

1.4180

1.4184

1.4182

0.0004

14

1.4299

1.4286

1.4293

− 0.0013

15

1.4390

1.4386

1.4388

− 0.0004

16

1.4090

1.4095

1.4093

0.0005

17

1.4515

1.4507

1.4511

− 0.0008

18

1.3581

1.3560

1.3571

− 0.0021

19

1.3705

1.3696

1.3701

− 0.0009

20

1.4506

1.4505

1.4506

− 0.0001

Average

1.4121

1.4117

1.4119

− 0.0004

SD

0.0607

0.0618

0.0613

0.0021