Table 1.

Baseline characteristics of the placebo and treatment (CXL) groups

		Placebo group (N = 14)	CXL group (N = 15)
	Female Patients	14 % (2)	27 % (4)	p = 0.41
	Age at inclusion	25.8 +/−7.4	29.5 +/−11.1	p = 0.55
Centre:	Freiburg	64 % (9)	40 % (6)	p = 0.10
	München	36 % (5)	33 % (5)
	Würzburg	0 % (0)	27 % (4)
	Corneal thickness at inclusion	468.8 +/−25.4	466.8 +/−27.8	p = 0.91
	Kmin at inclusion	46.5 +/−4.3	44.0 +/−1.7	p = 0.07
	Kmax at inclusion	50.9 +/−5.7	47.3 +/−2.2	p = 0.05
	Visual acuity at inclusion (logMAR)	0.39 +/−0.37	0.25 +/−0.15	p = 0.38