Cross-sectional study evaluating the effectiveness of the Mozambique-Canada maternal health project abstraction tool for maternal near miss identification in Inhambane province, Mozambique.

OBJECTIVES

The objectives of this study are to determine whether the additional clinical criteria of the Mozambique maternal near miss abstraction tool enhance the effectiveness of the original WHO abstraction tool in identifying maternal near miss cases and also evaluate the impact of sociodemographic factors on maternal near miss identification.

DESIGN

Cross-sectional study.

SETTING

Two secondary referral hospitals in Inhambane province, Mozambique from 2021 to 2022.

PARTICIPANTS

From August 2021 to February 2022, 2057 women presenting at two hospitals in Inhambane Province, Mozambique, were consecutively enrolled. Eligible participants included women admitted during pregnancy, labour, delivery, or up to 42 days post partum. Selection criteria focused on women experiencing obstetric complications, while those without complications or with incomplete medical records were excluded.

PRIMARY AND SECONDARY OUTCOME MEASURES

The primary outcome was identifying maternal near miss cases using the original WHO Disease criterion and the additional clinical criteria from the Mozambique-Canada Maternal Health Project abstraction tool. Secondary outcomes included the association between sociodemographic factors and maternal near miss identification. All outcomes were measured as planned in the study protocol.

RESULTS

The new Mozambique-Canada abstraction tool identified more maternal near miss cases (28.2% for expanded disease and 21.1% for comorbidities) compared with the original WHO tool (16.2%). Hypertension and anaemia from the newer criteria were strongly associated with the original WHO Disease criterion (p<0.001), with kappa values of 0.58 (95% CI 0.53 to 0.63) and 0.21 (95% CI 0.16 to 0.26), respectively. Distance to health facilities was significantly associated, with women living over 8 km away having higher odds (OR=2.47, 95% CI 1.92 to 3.18, p<0.001). Type of hospital also influenced identification, with lower odds at Vilankulo Rural Hospital for Expanded Disease criterion (OR=0.70, 95% CI 0.57 to 0.87, p=0.001), but higher odds for comorbidities criterion (OR=3.13, 95% CI 2.40 to 4.08, p<0.001). Finally, older age was associated with higher odds of identification under the comorbidities criterion, particularly for women aged 30-39 (OR=3.06, 95% CI 2.15 to 4.36) as well as those 40 years or older (OR=4.73, 95% CI 2.43 to 9.20, p<0.001).

CONCLUSIONS

The Mozambique-Canada Maternal Health Project tool enhances maternal near miss identification over the original WHO tool by incorporating expanded clinical criteria, particularly for conditions like hypertension and anaemia. Sociodemographic factors, including healthcare access, hospital type and maternal age, significantly impact near miss detection. These findings support integrating the expanded criteria into the WHO tool for improved identification of maternal near misses in Mozambique and similar low-resource settings. Future research should examine the tool's effectiveness across varied healthcare contexts and populations.