Table 4

Sensitivity and specificity for single and combined usages of ultrasonography (UT) and Metricheck device (MT) from two weeks to seven weeks postpartum

WeekSingle or combined techniques*Sensitivity
%
95% confidence intervalSpecificity
%
95% confidence interval
2 MT95.70.78 to 0.990.00.00 to 0.00
UT95.70.78 to 0.990.00.00 to 0.00
Both MT and UT91.30.72 to 0.980.00.00 to 0.00
Either MT or UT100.01.00 to 1.000.00.00 to 0.00
3 MT50.00.26 to 0.7360.00.26 to 0.87
UT88.90.65 to 0.9810.00.00 to 0.44
Both MT and UT50.00.26 to 0.7360.00.26 to 0.87
Either MT or UT88.90.65 to 0.9810.00.00 to 0.44
4 MT44.40.21 to 0.6977.80.20 to 0.97
UT61.10.35 to 0.8877.80.20 to 0.97
Both MT and UT33.30.13 to 0.5988.90.51 to 0.99
Either MT or UT72.20.46 to 0.9066.70.29 to 0.92
5 MT50.00.18 to 0.8183.30.58 to 0.97
UT50.00.18 to 0.8177.80.52 to 0.93
Both MT and UT30.00.01 to 0.6594.40.72 to 0.99
Either MT or UT70.00.36 to 0.9366.70.44 to 0.88
6 MT50.00.15 to 0.8472.20.46 to 0.90
UT50.00.15 to 0.8483.30.58 to 0.96
Both MT and UT37.50.01 to 0.75100.01.00 to 1.00
Either MT or UT62.50.24 to 0.9155.60.30 to 0.78
7 MT50.00.11 to 0.88100.01.00 to 1.00
UT66.70.22 to 0.9594.10.71 to 0.99
Both MT and UT50.00.11 to 0.88100.01.00 to 1.00
Either MT or UT66.70.22 to 0.9594.10.71 to 0.99
  • *MT, Metricheck device; UT, ultrasonography; Both MT and UT, both methods being positive as final positive; Either MT or UT, either of the methods being positive as final positive.