Table 4.

Participant knowledge levels of preconception risk factors

Evidence certaintya	Preconception risk factor	N	% (95% confidence interval)
High	Folic acid supplementation	275	32.9 (29.8–36.2)
Moderate	Physical activity	661	79.2 (76.3–81.8)
	Body mass index (BMI)/weight	335	40.1 (36.8–43.5)
	Interpregnancy weight change	0	0.0 (0.0–0.0)
Low	Excess iron intake	0	0.0 (0.0–0.0)
	Diet	718	86.0 (83.4–88.2)
	Abuse	53	6.3 (4.9–8.2)
	Age	49	5.9 (4.5–7.7)
	Interpregnancy intervals	2	0.2 (0.1–1.0)

^aDetermined using the GRADE approach in Daly et al. [5]

^bPhysical, emotional or sexual