Table 2.
Comparison of CAL measured by Williams probe and CEJ probe by examiner 1 & examiner 2.
| Paired t-test CAL–examiner 1 & examiner 2 | |||||||
|---|---|---|---|---|---|---|---|
| Examiner 1 | Mean | Std. deviation | Examiner 2 | Mean | Std. deviation | ||
| Pair 1 | L1 C | 6.03 | 2.798 | Pair 1 | L1 C1 | 5.80 | 2.511 |
| L1 D | 4.60 | 2.328 | L1 D1 | 4.60 | 2.328 | ||
| Pair 2 | L2 C | 4.20 | 2.987 | Pair 2 | L2 C1 | 4.17 | 2.755 |
| L2 D | 3.00 | 2.421 | L2 D1 | 3.00 | 2.421 | ||
| Pair 3 | L3 C | 4.80 | 1.972 | Pair 3 | L3 C1 | 4.63 | 1.903 |
| L3 D | 3.33 | 1.845 | L3 D1 | 3.33 | 1.845 | ||
| Pair 4 | L4 C | 3.90 | 1.583 | Pair 4 | L4 C1 | 4.00 | 1.390 |
| L4 D | 2.47 | 1.479 | L4 D1 | 2.47 | 1.479 | ||
| Pair 5 | L5 C | 3.50 | 1.676 | Pair 5 | L5 C1 | 3.70 | 1.442 |
| L5 D | 2.20 | 1.243 | L5 D1 | 2.20 | 1.243 | ||
| Pair 6 | L6 C | 3.90 | 2.023 | Pair 6 | L6 C1 | 3.23 | 2.029 |
| L6 D | 2.37 | 1.810 | L6 D1 | 2.37 | 1.810 | ||
| Pair 7 | L7 C | 4.13 | 2.193 | Pair 7 | L7 C1 | 4.13 | 2.193 |
| L7 D | 2.80 | 1.827 | L7 D1 | 2.80 | 1.827 | ||
| Pair 8 | L8 C | 3.23 | 1.942 | Pair 8 | L8 C1 | 3.23 | 1.942 |
| L8 D | 2.10 | 1.517 | L8 D1 | 2.10 | 1.517 | ||
| Pair 9 | L9 C | 3.83 | 1.783 | Pair 9 | L9 C1 | 3.83 | 1.783 |
| L9 D | 2.47 | 1.717 | L9 D1 | 2.47 | 1.717 | ||
| Pair 10 | L10 C | 3.47 | 1.676 | Pair 10 | L10 C1 | 3.47 | 1.676 |
| L10 D | 2.17 | 1.262 | L10 D1 | 2.17 | 1.262 | ||
| Pair 11 | L11 C | 3.27 | 1.660 | Pair 11 | L11 C1 | 3.27 | 1.660 |
| L11 D | 1.90 | 1.296 | L11 D1 | 1.90 | 1.296 | ||
| Pair 12 | L12 C | 3.47 | 1.676 | Pair 12 | L12 C1 | 3.47 | 1.676 |
| L12 D | 2.13 | 1.383 | L12 D1 | 2.13 | 1.383 | ||
| Paired Samples test | |||||||
|---|---|---|---|---|---|---|---|
| Examiner 1 | t | ‘p’ value | Examiner 2 | t | ‘p’ value | ||
| Pair 1 | L1 C–L1 D | 10.785 | .000 | Pair 1 | L1 C1–L1 D1 | 7.761 | .000 |
| Pair 2 | L2 C–L2 D | 7.761 | .000 | Pair 2 | L2 C1–L2 D1 | 7.663 | .000 |
| Pair 3 | L3 C–L3 D | 10.351 | .000 | Pair 3 | L3 C1–L3 D1 | 9.497 | .000 |
| Pair 4 | L4 C–L4 D | 10.785 | .000 | Pair 4 | L4 C1–L4 D1 | 11.500 | .000 |
| Pair 5 | L5 C–L5 D | 10.140 | .000 | Pair 5 | L5 C1–L5 D1 | 11.238 | .000 |
| Pair 6 | L6 C–L6 D | 12.324 | .000 | Pair 6 | L6 C1–L6 D1 | 6.500 | .000 |
| Pair 7 | L7 C–L7 D | 10.269 | .000 | Pair 7 | L7 C1–L7 D1 | 10.269 | .000 |
| Pair 8 | L8 C–L8 D | 7.999 | .000 | Pair 8 | L8 C1–L8 D1 | 7.999 | .000 |
| Pair 9 | L9 C–L9 D | 10.420 | .000 | Pair 9 | L9 C1–L9 D1 | 10.420 | .000 |
| Pair 10 | L10 C–L10 D | 8.510 | .000 | Pair 10 | L10 C1–L10 D1 | 8.510 | .000 |
| Pair 11 | L11 C–L11 D | 10.420 | .000 | Pair 11 | L11 C1–L11 D1 | 10.420 | .000 |
| Pair 12 | L12 C–L12 D | 11.050 | .000 | Pair 12 | L12 C1–L12 D1 | 11.050 | .000 |
The difference between C & D is significant for all 12 CAL readings. Mean is higher in C Group compared to D Group for examiner 1. The difference between C1 & D1 is significant D1 for all 12.CAL readings. Mean is higher in C1 Group compared to D1 Group D1 or examiner 2.