Follow-up after medical abortion up to 10+0 weeks
Evidence review I
NICE Guideline, No. 140
Authors
National Guideline Alliance (UK).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).
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.
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.
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)?
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
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)?
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)?
Comparison 1. Remote follow-up versus clinic follow-up
Figure 2. Missed ongoing pregnancy
Figure 4. Adherence to follow-up strategy; Not meta-analysed due to high heterogeneity (I2 = 93%)
Appendix F. GRADE tables
GRADE 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)?
Table 4. Clinical evidence profile: Comparison 1. Remote follow-up versus clinic follow-up
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
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.
Final
Evidence reviews
These evidence reviews were developed by the National Guideline Alliance hosted by the Royal College of Obstetricians and Gynaecologists
Disclaimer: The recommendations in this guideline represent the view of NICE, arrived at after careful consideration of the evidence available. When exercising their judgement, professionals are expected to take this guideline fully into account, alongside the individual needs, preferences and values of their patients or service users. The recommendations in this guideline are not mandatory and the guideline does not override the responsibility of healthcare professionals to make decisions appropriate to the circumstances of the individual patient, in consultation with the patient and/or their carer or guardian.
Local commissioners and/or providers have a responsibility to enable the guideline to be applied when individual health professionals and their patients or service users wish to use it. They should do so in the context of local and national priorities for funding and developing services, and in light of their duties to have due regard to the need to eliminate unlawful discrimination, to advance equality of opportunity and to reduce health inequalities. Nothing in this guideline should be interpreted in a way that would be inconsistent with compliance with those duties.
NICE guidelines cover health and care in England. Decisions on how they apply in other UK countries are made by ministers in the Welsh Government, Scottish Government, and Northern Ireland Executive. All NICE guidance is subject to regular review and may be updated or withdrawn.