Table 2. Tests ratios per total primary care requests in percentage (%) in Phase PRE – intervention (from January 2018 to June 2018) and Phase POST – intervention (from July 2019 to December 2019).

Test	Phase PRE (%) (mean ± SD)	Phase POST (%) (mean ± SD)	P
Total iron	26.7 ± 0.7	12.2 ± 0.6	< 0.001
Transferrin	9.0 ± 0.1	5.1 ± 0.4	< 0.001
Ferritin	26.0 ± 0.3	19.2 ± 0.8	< 0.001
Folate	11.3 ± 0.6	6.6 ± 0.3	< 0.001
Vitamin B12	13.7 ± 0.7	8.6 ± 0.5	< 0.001
“Anaemia Suspicion Study”	NA	0.9 ± 0.2	NA
“Microcytic Anaemia Follow Up”	NA	6.5 ± 0.3	NA
“Normo/Macrocytic Anaemia Follow Up”	NA	0.5 ± 0.1	NA
Tests ratios are expressed as mean ± standard deviation (SD). Differences were tested by paired two-tailed t-test. NA - not applicable.