Cover of Follow-up after medical abortion up to 10+0 weeks

Follow-up after medical abortion up to 10+0 weeks

Abortion care

Evidence review I

NICE Guideline, No. 140

Authors

.

London: National Institute for Health and Care Excellence (NICE); .
ISBN-13: 978-1-4731-3539-0
Copyright © NICE 2019.

Follow-up after medical abortion up to 10+0 weeks

Review question

What is the best method of excluding an ongoing pregnancy after early (up to 10+0 weeks) medical abortion, when the expulsion has not been witnessed by healthcare professionals (for example, expulsion at home)?

Introduction

The aim of this review is to determine the best method of excluding ongoing pregnancy when the expulsion has not been witnessed by healthcare professionals.

At the time of development, the title of this guideline was ‘Termination of pregnancy’ and this term was used throughout the guideline. In response to comments from stakeholders, the title was changed to ‘Abortion care’ and abortion has been used throughout. Therefore, both terms appear in this evidence report.

Summary of the protocol

See Table 1 for a summary of the population, intervention, comparison and outcome (PICO) characteristics of this review.

Table 1. Summary of the protocol (PICO table).

Table 1

Summary of the protocol (PICO table).

For further details see the full review protocol in appendix A.

Clinical evidence

Included studies

Only studies conducted from 2000 onwards were considered for this review question, because after 2000 clinical practice changed to include the possibility of remote assessment for successful abortion of an early pregnancy when the expulsion has not been witnessed by healthcare professionals (for example, expulsion at home).

Six randomised controlled trials were included in this evidence review. Four of these studies compared routine clinic-based follow-up with remote, home-based, self-assessment follow-up after medical abortion (Bracken 2014; Ngoc 2014; Oppegaard 2015; Platais 2015) while the remaining 2 studies compared different methods of remote, home-based self-assessment follow-up (Blum 2016; Constant 2017).

The included studies are summarised in Table 2.

Table 2. Summary of included studies.

Table 2

Summary of included studies.

See the literature search strategy in appendix B and study selection flow chart in appendix C.

Excluded studies

Studies not included in this review with reasons for their exclusions are provided in appendix K.

Summary of clinical studies included in the evidence review

A summary of the studies that were included in this review are presented in Table 2.

See the full evidence tables in appendix D and the forest plots in appendix E.

Quality assessment of clinical studies included in the evidence review

See the clinical evidence profiles in appendix F.

Economic evidence

Included studies

A systematic review of the economic literature was conducted but no economic studies were identified which were applicable to this review question.

A single economic search was undertaken for all topics included in the scope of this guideline. Please see supplementary material 2 for details.

Excluded studies

No full-text copies of articles were requested for this review and so there is no excluded studies list.

Economic model

No economic modelling was undertaken for this review because the committee agreed that other topics were higher priorities for economic evaluation.

Resource impact

Table 3. Unit costs of pregnancy tests considered.

Table 3

Unit costs of pregnancy tests considered.

Evidence statements

Comparison 1. Remote follow-up versus clinic follow-up

Critical outcomes
Missed ongoing pregnancy (failure to detect an ongoing pregnancy)

RCT evidence (n=2935) did not detect a clinically important difference in ‘the rate of missed ongoing pregnancy’ between the remote follow-up group and the clinic-based follow-up group (3 RCTs, n=2935; RR= 4.91; 95% CI 0.58, 41.54; very low quality); however, there was uncertainty around this estimate.

Correct implementation of follow-up strategy (comprehension; i.e., the women understand how to undertake the remote self-assessment protocol)

No evidence was identified to inform this outcome.

Patient satisfaction (prefer remote follow-up for managing abortion follow-up in future)

RCT evidence that could not be meta-analysed due to high heterogeneity (I2=99%; 4 RCTs, n=5060; very low quality) showed a higher clinically important difference in the rates of women who preferred remote follow-up for managing abortion in the future in the women who received remote follow-up compared to the women who received clinic-based follow-up in 3 of the 4 studies (RR=1.4, 95% CI 1.26, 1.55; RR=1.58; 95% CI 1.48, 1.69; and RR=2.22; 95% CI 2.01, 2.45, respectively) whereas there was no clinically important difference in the 4th study (RR=1.03; 95% CI 0.96, 1.1).

Important outcomes
Adherence to follow-up strategy

RCT evidence that could not be meta-analysed due to high heterogeneity (I2=93%; 3 RCTs, n=4766; very low quality) showed no clinically important difference in ‘the rates of adherence to the follow-up strategy’ between women who received remote or clinic-based follow-up (RR=0.95, 95% CI 0.87, 1.03; RR=0.99; 95% CI 0.98, 1.01; and RR=1.07; 95% CI 1.05, 1.1, respectively).

Unscheduled visits to the abortion service

RCT evidence did not detect a clinically important difference in ‘the rate of unscheduled visits to the abortion service’ between the remote follow-up group and the clinic-based follow-up group (4 RCTs, n=5454; RR= 1.2; 95% CI 0.91, 1.59; low quality); however, there was uncertainty around this estimate.

Unscheduled phone calls to the abortion service

RCT evidence did not detect a clinically important difference in ‘the rate of unscheduled telephone calls to the abortion service’ between the remote follow-up group and the clinic-based follow-up group (1 RCT, n=694; RR= 1.05; 95% CI 0.78, 1.43; very low quality); however, there was uncertainty around this estimate.

Surgical intervention

RCT evidence did not detect a clinically important difference in ‘the rate of surgical intervention’ between the remote follow-up group and the clinic-based follow-up group (4 RCTs, n=5703; RR= 0.93; 95% CI 0.7, 1.23; very low quality); however, there was uncertainty around this estimate.

Comparison 2. Remote follow-up ‘Multi-level pregnancy test’ versus remote follow-up ‘High sensitivity pregnancy test’

Critical outcomes
Missed ongoing pregnancy (failure to detect an ongoing pregnancy)

RCT evidence reported no events of missed ongoing pregnancy in either the multi-level pregnancy test group or the high sensitivity pregnancy test group; therefore difference between groups could not be estimate (1 RCT, n=584; low quality).

Correct implementation of follow-up strategy (comprehension; i.e., the women understand how to undertake the remote self-assessment protocol)

No evidence was identified to inform this outcome.

Patient satisfaction (prefer remote follow-up for managing abortion follow-up in future)

RCT evidence showed no clinically important difference in ‘the rate of women who preferred remote follow-up for managing abortion in the future’ between the multi-level pregnancy test group and the high sensitivity pregnancy test group (1 RCT, n=584; RR=0.97; 95% CI 0.92, 1.03; moderate quality).

Important outcomes
Adherence to follow-up strategy

No evidence was identified to inform this outcome.

Unscheduled visits to the abortion service

RCT evidence showed a lower clinically important difference in ‘the rate of unscheduled visits to the abortion service’ in the multi-level pregnancy test group compared with the high sensitivity pregnancy test group (1 RCT, n=584; RR= 0.09; 95% CI 0.04, 0.22; moderate quality).

Unscheduled phone calls to the abortion service

No evidence was identified to inform this outcome.

Surgical intervention

RCT evidence did not detect a clinically important difference in ‘the rate of surgical intervention’ between the multi-level pregnancy test group and the high sensitivity pregnancy test group (1 RCT, n=584; RR= 0.33; 95% CI 0.01, 8.09; very low quality); however, there was uncertainty around this estimate.

Comparison 3. Remote follow-up ‘Demonstration’ versus remote follow-up ‘Instruction’

Critical outcomes
Missed ongoing pregnancy (failure to detect an ongoing pregnancy)

RCT evidence did not detect a clinically important difference in ‘the rate of missed ongoing pregnancy’ between the Demonstration group and the Instruction group (1 RCT, n=426; RR=2.86; 95% CI 0.12, 69.89; very low quality); however, there was uncertainty around this estimate.

Correct implementation of follow-up strategy (comprehension; i.e., the women understand how to undertake the remote self-assessment protocol)

No evidence was identified to inform this outcome.

Patient satisfaction (prefer remote follow-up for managing abortion follow-up in future)

RCT evidence showed no clinically important difference in ‘the rate of women who preferred remote follow-up for managing abortion in the future’ between the Demonstration group and the Instruction group (1 RCT, n=458; RR=1; 95% CI 0.98, 1.03; moderate quality).

Important outcomes
Adherence to follow-up strategy

No evidence was identified to inform this outcome.

Unscheduled visits to the abortion service

No evidence was identified to inform this outcome.

Unscheduled phone calls to the abortion service

No evidence was identified to inform this outcome.

Surgical intervention

No evidence was identified to inform this outcome.

The committee’s discussion of the evidence

Interpreting the evidence
The outcomes that matter most

Verification of the success of an early medical abortion usually involves a follow-up in-person ultrasound scan. However, women could assess the success of the procedure remotely themselves by following a remote assessment protocol including a urine pregnancy test, provided the remote protocol is as effective and safe as in-person assessment. Missed on-going pregnancy, correct implementation of follow-up strategy and patient satisfaction were therefore selected as critical outcomes. Adherence to follow-up strategy, unscheduled visits or telephone calls to the abortion service and surgical intervention were included as important outcomes due to the impact that needing an unscheduled or second appointment will have on both the woman and on available resources.

The quality of the evidence

The evidence in the pairwise comparisons was assessed using the GRADE methodology. The quality of the evidence across all outcomes ranged from very low to moderate quality and was most often downgraded due to imprecision, inconsistency or design limitations, e.g., 5 of the 6 studies were unblinded.

Benefits and harms

The evidence showed that there were no clinically important differences in the rate of adherence to follow-up strategy between the remote and clinic-based follow-up groups, and that is was unclear whether or not there were clinically important differences between these groups in the rates of missed ongoing pregnancy, unscheduled phone calls or visits to the abortion service or surgical intervention. The evidence also showed that in 3 of the 4 studies the women in the remote follow up groups expressed a clinically important higher rate of preference for remote follow up in a potential future abortion than in the clinic-based groups. When comparing different remote follow-up strategies, the evidence showed that there were no clinically important differences between these comparisons in terms of patient preference, but for both comparisons it was unclear whether or not there was a clinically important difference in the rates of missed ongoing pregnancy, and this was also the case for rates of surgical intervention for the multi-level urine pregnancy test versus a high sensitivity urine pregnancy test comparison. There was, however, a higher clinically important difference in the rate of unscheduled visits to the abortion service in the high-sensitivity urine pregnancy group compared to the multi-level urine pregnancy test group.

The committee noted that both in the evidence and in their experience many women do not return to clinic for their follow-up appointment. A potential benefit of these recommendations is therefore that by giving women both the choice of follow-up method and, in the case of self-assessment and remote follow-up, a pregnancy test, overall more women will receive follow-up. This in turn will help ensure that any unsuccessful medical abortions will have a higher chance of being identified earlier. Moreover, the committee noted that women have to wait longer after the abortion procedure in order to be able to use high sensitivity pregnancy tests because these are not reliable as soon after the abortion as other pregnancy tests. This means that the recommendations will also serve to ensure a quicker resolution of the whole medical abortion intervention. Overall, the committee therefore agreed that the recommendations serve to make abortion services more women-centred by focusing on women’s preference for follow-up method and swift resolution in terms of the assessment of the outcome of the abortion.

As there was sufficient evidence to inform the recommendations, the committee decided to prioritise other areas addressed by the guideline for future research and therefore made no research recommendations regarding the best method of excluding an ongoing pregnancy after early (up to and including 10+0 weeks) medical abortion, when the expulsion has not been witnessed by healthcare professionals (for example, expulsion at home).

Cost effectiveness and resource use

A systematic review of the economic literature was conducted but no relevant studies were identified which were applicable to this review question.

The committee considered that there was unlikely to be a significant resource impact from the recommendations made. Any net effect was likely to be cost saving due to fewer clinic visits and fewer ultrasound scans being required for women opting for self-assessment or remote follow-up rather than in-clinic follow-up. Moreover, although low sensitive pregnancy tests are more expensive than high sensitivity pregnancy tests, this difference in price will be offset by fewer clinic visits (and fewer false positive test results) by women who receive the low sensitivity pregnancy test compared to the high sensitivity pregnancy test.

References

  • Blum 2016

    Blum, J., Sheldon, W. R., Ngoc, N. T. N., Winikoff, B., Nga, N. T. B., Martin, R., Van Thanh, L., Blumenthal, P. D., Randomized trial assessing home use of two pregnancy tests for determining early medical abortion outcomes at 3, 7 and 14 days after mifepristone, Contraception, 94, 115–121, 2016 [PubMed: 27067706]

  • Bracken 2014

    Bracken, H., Lohr, P. A., Taylor, J., Morroni, C., Winikoff, B., RU OK? The acceptability and feasibility of remote technologies for follow-up after early medical abortion, Contraception, 90, 29–35, 2014 [PubMed: 24815098]

  • Constant 2017

    Constant, D., Harries, J., Daskilewicz, K., Myer, L., Gemzell-Danielsson, K., Is self-assessment of medical abortion using a low-sensitivity pregnancy test combined with a checklist and phone text messages feasible in South African primary healthcare settings? A randomized trial, PLoS ONE, 12 (6) (no pagination), 2017 [PMC free article: PMC5480887] [PubMed: 28640845]

  • Ngoc 2014

    Ngoc, N. T. N., Bracken, H., Blum, J., Nga, N. T. B., Minh, N. H., Van Nhang, N., Lynd, K., Winikoff, B., Blumenthal, P. D., Acceptability and feasibility of phone follow-up after early medical abortion in Vietnam: A randomized controlled trial, Obstetrics and gynecology, 123, 88–95, 2014 [PubMed: 24463668]

  • Oppegaard 2015

    Oppegaard, K. S., Qvigstad, E., Fiala, C., Heikinheimo, O., Benson, L., Gemzell-Danielsson, K., Clinical follow-up compared with self-assessment of outcome after medical abortion: A multicentre, non-inferiority, randomised, controlled trial, The Lancet, 385, 698–704, 2015 [PubMed: 25468164]

  • Platais 2015

    Platais, I., Tsereteli, T., Comendant, R., Kurbanbekova, D., Winikoff, B., Acceptability and feasibility of phone follow-up with a semiquantitative urine pregnancy test after medical abortion in Moldova and Uzbekistan, Contraception, 91, 178–183, 2015 [PubMed: 25497383]

Appendices

Appendix A. Review protocols

Review protocol for review question: What is the best method of excluding an ongoing pregnancy after early (up to 10+0 weeks) medical abortion, when the expulsion has not been witnessed by healthcare professionals (for example, expulsion at home)?

Image

Table

Women who have had a medical termination of pregnancy (up to 10+0 weeks of gestation) with mifepristone and misoprostol and expelled the pregnancy at home Exclusions: -No studies with indirect populations

Appendix B. Literature search strategies

Literature search strategy for review question: What is the best method of excluding an ongoing pregnancy after early (up to 10+0 weeks) medical abortion, when the expulsion has not been witnessed by healthcare professionals (for example, expulsion at home)?

The search for this topic was last run on 19th November 2018 during the re-runs for this guideline.

Database: Medline & Embase (Multifile)

Last searched on Embase Classic+Embase 1947 to 2018 November 16, Ovid MEDLINE(R) Epub Ahead of Print, In-Process & Other Non-Indexed Citations, Ovid MEDLINE(R) Daily and Ovid MEDLINE(R) 1946 to November 16, 2018

Date of last search: 19th November 2018

Database: Cochrane Library via Wiley Online

Date of last search: 19th November 2018

Appendix C. Clinical evidence study selection

Clinical evidence study selection for review question: What is the best method of excluding an ongoing pregnancy after early (up to 10+0 weeks) medical abortion, when the expulsion has not been witnessed by healthcare professionals (for example, expulsion at home)?

Figure 1. Study selection flow chart

Appendix D. Clinical evidence tables

Clinical evidence tables for review question: What is the best method of excluding an ongoing pregnancy after early (up to 10+0 weeks) medical abortion, when the expulsion has not been witnessed by healthcare professionals (for example, expulsion at home)?

Download PDF (429K)

Appendix E. Forest plots

Forest plots for review question: What is the best method of excluding an ongoing pregnancy after early (up to 10+0 weeks) medical abortion, when the expulsion has not been witnessed by healthcare professionals (for example, expulsion at home)?

Appendix F. GRADE tables

Appendix G. Economic evidence study selection

Economic evidence for review question: What is the best method of excluding an ongoing pregnancy after early (up to 10+0 weeks) medical abortion, when the expulsion has not been witnessed by healthcare professionals (for example, expulsion at home)?

No economic evidence was identified which was applicable to this review question.

Appendix H. Economic evidence tables

Economic evidence tables for review question: What is the best method of excluding an ongoing pregnancy after early (up to 10+0 weeks) medical abortion, when the expulsion has not been witnessed by healthcare professionals (for example, expulsion at home)?

No economic evidence was identified which was applicable to this review question.

Appendix I. Economic evidence profiles

Economic evidence profiles for review question: What is the best method of excluding an ongoing pregnancy after early (up to 10+0 weeks) medical abortion, when the expulsion has not been witnessed by healthcare professionals (for example, expulsion at home)?

No economic evidence was identified which was applicable to this review question.

Appendix J. Health economic analysis

Economic analysis for review question: What is the best method of excluding an ongoing pregnancy after early (up to 10+0 weeks) medical abortion, when the expulsion has not been witnessed by healthcare professionals (for example, expulsion at home?

No economic analysis was conducted for this review question.

Appendix K. Excluded studies

Excluded studies for review question: What is the best method of excluding an ongoing pregnancy after early (up to 10+0 weeks) medical abortion, when the expulsion has not been witnessed by healthcare professionals (for example, expulsion at home)?

Clinical studies

Image

Table

PICO: population, intervention, comparison and outcomes

Economic studies

No economic evidence was identified for this review. See supplementary material 2 for further information.

Appendix L. Research recommendations

Research recommendations for question: What is the best method of excluding an ongoing pregnancy after early (up to 10+0 weeks) medical abortion, when the expulsion has not been witnessed by healthcare professionals (for example, expulsion at home)?

No research recommendations were made for this review question.