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. Author manuscript; available in PMC: 2013 Apr 8.
Published in final edited form as: J Clin Periodontol. 2012 Aug 26;39(11):1032–1041. doi: 10.1111/j.1600-051X.2012.01941.x

Table 2.

Comparison of periodontal measurements for pairwise combinations of periodontal probes. “ Basic probe” designates the probe for which periodontal measurements need to be corrected to achieve comparability with periodontal measurements recorded with a second probe (designated as “target probe”). There are three blocks corresponding to three possible basic probes (marked bold): PCP11, PCP2 and PCPUNC15. For each of the three blocks, millimeter levels of the basic probe, the number (N) of measurement sites exhibiting respective millimeter values using the basic probe and the correction value are given

PCP11… …to PCP2
…to PCPUNC15
PCP2… …to PCP11
…to PCPUNC15
PCPUNC15… …to PCP2
…to PCP11
mm level N Correction value N Correction value mm level N Correction value N Correction value mm level N Correction value N Correction value
Attachment loss, mm
 1 161 1.39 140 1.39 1 139 1.33 133 1.34 1 154 1.47 151 1.52
 2 233 2.06 237 2.11 2 347 2.29 350 2.18 2 300 2.12 279 2.29
 3 275 2.77 269 2.81 3 207 3.11 207 2.94 3 235 2.94 231 3.06
 4 169 3.84 168 3.92 4 157 4.09 154 4.05 4 171 4.24 176 4.19
 5 126 4.81 124 4.85 5 135 4.96 126 5.06 5 106 4.91 113 5.04
 6 111 5.65 111 6.04 6 113 6.27 113 6.09 6 107 5.77 113 6.16
 7 92 6.68 94 6.57 7 76 6.89 72 6.42 7 87 6.46 93 6.66
 8 58 7.47 61 6.84 8 51 7.35 51 7.16 8 49 7.49 52 7.52
Probing depth, mm
 1 1064 1.35 1064 1.25 1 874 1.21 874 1.17 1 1123 1.37 1123 1.32
 2 1290 1.95 1291 1.92 2 1941 2.11 1941 2.00 2 1560 2.04 1561 2.14
 3 982 2.65 980 2.69 3 372 2.86 371 2.77 3 535 2.72 535 2.85
 4 102 3.80 102 4.00 4 277 3.57 276 3.75 4 192 3.70 192 3.63
 5 93 4.63 93 4.56 5 88 5.05 88 4.83 5 162 4.44 162 4.51
 6 131 5.73 131 5.50 6 112 5.90 112 5.55 6 95 5.75 95 5.85
Gingiva height, mm
 1 1012 1.12 1030 1.11 1 968 1.08 939 1.10 1 987 1.15 1016 1.10
 2 430 1.86 431 1.81 2 521 1.87 538 1.78 2 484 1.82 486 1.86
 3 68 2.09 67 2.22

Bias correction values equal the mean of target probe measurements evaluated for each millimeter level of the basic probe. Correlation within subjects was accounted for via survey methods provided in STATA.