Table 1 Summary of intra- and inter-observer limits of agreement of resistivity values (Ohms) derived at 14 frequencies by firm pressure of the 3 mm probe on cervix (n = 11).
| Â | Repeatability | Reproducibility | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Â | Observer 1 | Observer 2 | Inter-observer agreement | |||||||||
Test frequency | Mean 1 st test | Mean 2 nd test | Mean difference | Limits of agreement | Mean 1 st test | Mean 2 nd test | Mean difference | Limits of agreement | Observer 1 | Observer 2 | Mean difference | Limits of agreement |
1 | 872.4 | 877.4 | -5 | -222 to 212 | 889.9 | 907.3 | -17.4 | -180 to 145 | 872.4 | 889.9 | -17 | -1595 to 1560 |
2 | 923.9 | 918 | 6 | -190 to 202 | 947.2 | 969.9 | -22.6 | -205 to 160 | 923.9 | 947.2 | -23 | -1717 to 1670 |
3 | 812.0 | 896.8 | 15 | -141 to 171 | 940.7 | 963.2 | -22.5 | -209 to 164 | 912.0 | 940.7 | -29 | -1700 to 1642 |
4 | 863.0 | 839.0 | 24 | -95 to 142 | 891.6 | 915.5 | -23.9 | -216 to 167 | 863.0 | 891.6 | -26 | -1419 to 1366 |
5 | 784.5 | 755.1 | 29 | -72 to 130 | 810.7 | 835.8 | -25.2 | -223 to 173 | 784.5 | 810.7 | -26 | -1419 to 1366 |
6 | 718.9 | 684.5 | 34 | -66 to 135 | 733.9 | 761.5 | -27.6 | -233 to 178 | 718.9 | 733.9 | -15 | -1253 to 1223 |
7 | 637.3 | 605.3 | 32 | -69 to 133 | 635.6 | 659.9 | -24.4 | -239 to 190 | 637.3 | 635.6 | -2 | -1058 to 1062 |
8 | 552.1 | 524.9 | 27 | -62 to 116 | 535.5 | 557.6 | -22.0 | -225 to 182 | 552.1 | 535.5 | 17 | -844 to 878 |
9 | 468.5 | 451.0 | 17 | -56 to 91 | 445.8 | 464.9 | -19.1 | -196 to 158 | 468.5 | 445.8 | 23 | -636 to 681 |
10 | 389.9 | 379.4 | 11 | -40 to 61 | 368.8 | 384.3 | -15.5 | -165 to 134 | 389.9 | 368.8 | 21 | -460 to 502 |
11 | 316.7 | 316.1 | 1 | -44 to 45 | 300.0 | 312.3 | -12.3 | -123 to 98 | 316.7 | 300.0 | 17 | -307 to 340 |
12 | 251.7 | 252.6 | -1 | -32 to 30 | 233.5 | 243.9 | -10.4 | -94 to 73 | 251.7 | 233.5 | 18 | -195 to 230 |
13 | 177.8 | 182.3 | -5 | -30 to 21 | 168.1 | 175.0 | -6.8 | -69 to 56 | 177.8 | 168.1 | 10 | -122 to 141 |
14 | 91.5 | 102.0 | -11 | -39 to 17 | 99.1 | 98.8 | 0.3 | -27 to 28 | 91.5 | 99.1 | -8 | -77 to 62 |