. 2019 Sep 18;12(9):1465–1473. doi: 10.18240/ijo.2019.09.15

Table 2. Differences of general characteristics among age groups.

Parameters	Age, y				Minimum, 25^th, 50^th, 75^th, maximum	P^a
Parameters	Total (n=550)	3-4 (n=122)^b	5 (n=208)	6 (n=220)	Minimum, 25^th, 50^th, 75^th, maximum	P^a
Central choroid, µm	312±59	314±59	312±60	312±59	163, 267, 309, 356, 487	0.920
In T, µm	322±58	321±57	319±59	324±57	155, 278, 321, 365, 483	0.678
In S, µm	310±57	313±57	309±59	309±55	146, 267, 308, 348, 483	0.844
In N, µm	266±57	269±59	266±58	266±55	128, 225, 265, 305, 452	0.825
In I, µm	298±58	298±58	299±60	298±58	154, 256, 292, 339, 478	0.972
Out T, µm	311±51	306±48	309±53	316±52	166, 271, 310, 348, 457	0.167
Out S, µm	291±53	293±50	289±56	292±52	108, 252, 289, 328, 467	0.713
Out N, µm	197±48	198±51	196±48	197±46	64, 161, 196, 226, 369	0.914
Out I, µm	271±50	270±49	271±51	272±49	158, 236, 267, 307, 415	0.912
Average thickness, µm	276±48	275±47	274±49	277±47	153, 238, 276, 308, 432	0.856
UCVA	0.68±0.16	0.58±0.13	0.66±0.14	0.76±0.15	0.1, 0.63, 0.63, 0.8, 1.25	<0.001
IOP, mm Hg	15.46±2.78	14.55±2.5	15.48±2.62	15.97±2.94	9, 14, 15, 17, 29	<0.001
SER, diopter	1.51±0.83	1.44±0.9	1.56±0.82	1.51±0.81	-2, 1, 1.5, 2, 4.75	0.496
AL, mm	22.36±0.72	22.16±0.65	22.32±0.71	22.5±0.74	20.6, 21.83, 22.37, 22.86, 24.73	<0.001
CR, mm	7.83±0.25	7.82±0.25	7.82±0.26	7.84±0.25	7.12, 7.64, 7.83, 7.99, 8.77	0.739
AL/CR	2.86±0.09	2.83±0.08	2.85±0.1	2.87±0.09	2.48, 2.81, 2.85, 2.9, 3.36	0.001

In T, In S, In N, In I: Temporal, superior, nasal and inferior section of the inner circle of the ETDRS grid; Out T, Out S, Out N, Out I: Temporal, superior, nasal and inferior section of the outer circle of the ETDRS grid; UCVA: Uncorrected visual acuity; IOP: Intraocular pressure; SER: Spherical equivalent refraction; AL: Axial length; CR: Corneal radius. ^aStatistical significance was tested using analysis of variance, P<0.05 was considered statistically significant. ^bFourteen 3-year-old children were included in this group.