Table 1.

Mean hemoglobin, serum ferritin and RBC folate concentrations in non-pregnant women, aged 15–49 years, Jordan 2002 and 2010.

Indicator	2002		2010		P-valuea
	N	Mean (95% CI)	n	Mean (95% CI)
Hemoglobin (g/l)b,c	1023	124.4 (123.5, 125.3)	2030	124.7 (123.7, 125.6)	0.70
Ferritin (ng/ml)d	1021	18.3 (17.0, 19.8)	2035	21.3 (20.1, 22.78)	0.01
RBC folate (ng/ml)d		NA	393	290.2 (270.2, 310.2)

Abbreviations: CI, confidence interval; NA, not applicable; RBC, red blood cell. Note: the n’s are unweighted denominators for each subgroup. Means are weighted. CI, adjusted for cluster sampling design.

^a2002 and 2010 means for each indicator compared using weighted t-tests.

^bHemoglobin is not adjusted for altitude.

^cArithmetic mean.

^dGeometric mean (note: RBC folate was measured on a subsample in 2010).