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Table 3 Methodological quality of included studies

From: Emergency transportation interventions for reducing adverse pregnancy outcomes in low- and middle-income countries: a systematic review protocol

Study ID (author/year)

Random sequence generation (selection bias)

Allocation concealment (selection bias)

Blinding (performance bias and detection bias)

Incomplete outcome data (attrition bias)

Selective reporting (reporting bias)

Other bias

Baseline outcome measurement similar?

Baseline characteristics similar?

Adequate protection against contamination?