Skip to main content

Table 4 Analysis for prevalence of undiagnosed HIV at induced abortions

From: Induced abortions of women living with HIV in Finland 1987–2019: a national register study

 

Assumed maximum time from transmission to symptoms that prompt HIV testing

 

5 years

10 years

15 years

Time considereda

1987–2014

1987–2009

1987–2004

Maximum estimate:

 Induced abortions in Finlandb

304,985

253,739

200,518

 WLWH with i.abortion before HIV diagnosis

68

100

110

 Number of i.abortions before HIV diagnosis

88

136

152

 Undiagnosed HIV/1000 induced abortions

0.29

0.54

0.76

Minimum estimate based on CD4+ cell count:

 WLWH with CD4+ count at diagnosis availablec

32

50

56

 Abortions with CD4+ count at diagnosis available

40

65

71

 WLWH estimated undiagnosed at ≥1 abortiond

10

19

20

 Abortions as undiagnosed based on CD4 count

11

21

22

 Undiagnosed HIV/abortions with CD4+ count avail.

28%

32%

31%

 Undiagnosed HIV/1000 induced abortions

0.08

0.17

0.23

Estimate for foreign-born women:

 Induced abortions among foreign-born in Finlande

24,395

17,761

12,030

 Foreign-born WLWH with abortion

25

28

23

 Number of abortions among foreign-born WLWH

29

35

30

 Undiagnosed HIV/1000 induced abortions

1.19

1.97

2.49

Estimate for women with previous i. abortion:

 Abortions in Finland with previous i. abortionsb

97,956

79,118

60,229

 WLWH with prev. Abortion at the time of abortion

31

41

43

 Abortions of WLWH with prev. abortions

40

54

50

 Undiagnosed HIV/1000 induced abortions

0.41

0.68

0.83

Estimate for women with previous deliveries:

 Abortions in Finland with previous deliveriesb

150,647

125,691

100,403

 WLWH with abortion and prev. delivery in the data

22

37

42

 Abortions of WLWH with prev. delivery in the data

35

54

57

 Undiagnosed HIV/1000 induced abortions

0.23

0.43

0.57

  1. aTo ensure all who had an induced abortion would have been diagnosed before study end-point
  2. bData from THL open data [19]
  3. cMeasured in Finland 0–90 days after HIV diagnosis
  4. dUsed thresholds based on Lodi et al., [18] CD4+ cell count at diagnosis → estimated time since transmission
  5. for 5 year-limit: ≥500 → 6 months, 350–499 → 1 year, 200–349 → 3 years, < 200 → 5 years
  6. for 10-year-limit: ≥500 → 1 year, 350–499 → 3 years, 200–349 → 8 years, < 200 → 10 years
  7. for 15-year-limit: ≥ 500 → 2 years, 350–499 → 6 years, 200–349 → 12 years, < 200 → 15 years
  8. eCalculated by roughly estimated proportions from [16, 20]: 8% for 5 year limit, 7% for 10 year limit, 6% for 15 year limit
Back to article page

BMC Pregnancy and Childbirth

ISSN: 1471-2393

Contact us