Table 3.

Retrospective review of the mean Phe level before and after introduction.

	Mean before texting (±SD)	Mean after texting (±SD)	p value
Whole group	406 (±160) µmol/l	416 (±188) µmol/l	0.156
2–4 years	335 (±70) µmol/l	326 (±79) µmol/l	0.331
4–10 years	370 (±99) µmol/l	393 (±129) µmol/l	0.021
10+ years	483 (±207) µmol/l	491 (±245) µmol/l	0.555