Skip to main content
. Author manuscript; available in PMC: 2017 Jul 1.
Published in final edited form as: Fertil Steril. 2016 Apr 7;106(1):158–163. doi: 10.1016/j.fertnstert.2016.03.038

Table 1.

Predicted relative increase in hCG from baseline with varied data conditions and 95% Confidence Intervals

Percentile Condition 1 day 2 Day 4 Day 7 Day
1 Raw data 1.22
(1.18,1.26)
1.48
(1.40,1.59)
2.20
(1.95,2.53)
3.98
(3.22,5.09)
Validated data 1.23
(1.17,1.28)
1.51
(1.38,1.65)
2.30
(1.90,2.72)
4.30
(3.06,5.75)
Resolution by hour 1.24
(1.18,1.29)
1.53
(1.39,1.66)
2.36
(1.93,2.75)
4.51
(3.15,5.88)
5 Raw data 1.29
(1.25,1.34)
1.67
(1.56,1.79)
2.80
(2.42,3.21)
6.06
(4.71,7.70)
Validated data 1.30
(1.26,1.35)
1.69
(1.58,1.81)
2.88
(2.51,3.29)
6.36
(5.00,8.05)
Resolution by hour 1.30
(1.26,1.35)
1.70
(1.59,1.82)
2.89
(2.53,3.32)
6.43
(5.09,8.18)
10 Raw data 1.35
(1.31,1.39)
1.83
(1.72,1.93)
3.34
(2.96,3.73)
8.27
(6.67,10.01)
Validated data 1.35
(1.31,1.39)
1.83
(1.72,1.94)
3.36
(2.95,3.76)
8.35
(6.63,10.15)
Resolution by hour 1.36
(1.31,1.40)
1.85
(1.73,1.95)
3.42
(2.99,3.80)
8.59
(6.79,10.34)
50 Raw data 1.49
(1.47,1.52)
2.23
(2.15,2.30)
4.97
(4.62,5.29)
16.54
(14.58,18.47)
Validated data 1.50
(1.48,1.52)
2.25
(2.18,2.31)
5.07
(4.75,5.31)
17.12
(15.28,18.60)
Resolution by hour 1.49
(1.47,1.51)
2.22
(2.17,2.28)
4.94
(4.73,5.19)
16.29
(15.17,17.86)

Raw data: Data taken directly from clinical database. Validated data: data validated with EMR. Resolution by hour: Validated data with temporal resolution to the hour (instead of by day). 50th percentile represents the predicted median increase for an intrauterine pregnancy. 1st percentile represents the slowest predicted increase for women with a normal intrauterine pregnancy.