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Table 2 Red cell folates (R. folate) performed at SBGH (1996-2004)

From: Ordering folate assays is no longer justified for investigation of anemias, in folic acid fortified countries

Year Number # of low R. folate % of low R.folate Mean R. folate (nmol/L)
1996 511 95 18.5 509
1997 474 56 11.5 588
1998 581 17 4.5 858
1999-01 991 19 1.9 947
2002-04 34 1 2.9 831
  1. The difference between the mean, number or percentage of low red cell folates in 1996 and 1997 is significant (P < 0.01), between those of 1997 and 1998 is also significant (P < 0.001), but the differences between those of 1998, 1999-2001 and 2002-2004 are not significant, based on Chi square calculation and t-test(By January first 1998 almost all of grain products in Canada were fortified with folic acid).