Table 2. Incidence of ODP in the two age subgroups.

	47÷63 y.o.			64÷78 y.o.
	ODP [%]	Mean age (years±SD)	Number of subjects	ODP [%]	Mean age (years±SD)	Number of subjects	ODP incidence difference Δ [%]
CG	73	58.5±3.0	30	83	66.2±2.0	24	10
GODA	66	54.2±5.3	14	66	73.2±5.3	25	0
POAG	59	56.5±5.4	32	88	67.6±5.7	14	29
PACG	61	54.6±2.2	11	91	69.5±3.8	39	30
ALL	65	57.9±5.0	87	80	67.4±3.0	102	15

ODP – ocular dicrotic pulse; CG – control group; GODA – glaucoma suspects with glaucomatous optic disc appearance; POAG – primary open angle glaucoma; PACG – primary angle closure glaucoma.