Table 3

κ value agreement of the tests from two weeks to seven weeks postpartum

WeekCombination of methods*κ† (95% CI‡)P value
2 MT * UT−0.04 (-0.09 to 0.01)0.84
MT * CYT−0.06 (-0.17 to 0.04)0.63
CYT * UT−0.06 (-0.17 to 0.04)0.63
3 MT * UT0.19 (-0.01 to 0.39)0.09
MT * CYT0.09 (-0.25 to 0.43)0.61
CYT * UT−0.01 (-0.29 to 0.26)0.92
4 MT * UT0.33 (-0.02 to 0.65)0.08
MT * CYT0.18 (-0.12 to 0.48)0.26
CYT * UT0.34 (0.01 to 0.67)0.06
5 MT * UT0.24 (-0.13 to 0.62)0.20
MT * CYT0.35 (-0.01 to 0.71)0.06
CYT * UT0.28 (-0.08 to 0.65)0.13
6 MT * UT0.10 (-0.28 to 0.49)0.59
MT * CYT0.21 (-0.17 to 0.60)0.27
CYT * UT0.34 (-0.05 to 0.74)0.08
7 MT * UT0.70 (0.32 to 1.00)<0.01
MT * CYT0.60 (0.20 to 0.99)<0.01
CYT * UT0.64 (0.27 to 1.00)<0.01
  • *MT, Metricheck device; UT, ultrasonography; CYT, cytobrush.

  • †Kappa value (κ) agreement was interpreted as: less than 0.00, between 0.01 to 0.20, between 0.21 to 0.40, between 0.41 to 0.60, between 0.61 to 0.80, greater than 0.81 was poor, very weak, weak, moderate, good and excellent agreement, respectively.

  • ‡95% CI; 95 per cent confidence interval.