Table 2.

Kidney length percentiles by age

Age [years]	Sex	2.5th percentile [mm]	10th percentile [mm]	25th percentile [mm]	50th percentile [mm]	75th percentile [mm]	90th percentile [mm]	97.5th percentile [mm]
0–1	♂	51.6	53.6	56.8	60.1	63.3	67.4	70.1
	♀	47.4	49.7	53.4	57.3	62.3	66.9	69.5
1–2	♂	56.3	58.7	62.3	66.0	69.2	73.1	75.6
	♀	53.5	56.3	60.3	64.0	68.8	73.1	75.5
2–3	♂	60.2	62.9	66.9	70.7	74.1	77.9	80.3
	♀	58.6	61.6	65.7	69.4	74.0	78.1	80.4
3–4	♂	63.7	66.6	70.8	74.7	78.5	82.3	84.6
	♀	62.9	66.0	70.2	73.9	78.4	82.5	84.7
4–5	♂	67.0	70.1	74.4	78.4	82.6	86.5	88.9
	♀	66.8	69.9	74.1	77.8	82.2	86.5	88.9
5–6	♂	69.8	72.9	77.4	81.4	86.0	90.2	92.8
	♀	69.9	72.8	76.9	80.8	85.4	89.9	92.5
6–7	♂	72.1	75.1	79.6	83.7	88.6	93.1	96.0
	♀	72.3	74.9	79.0	83.1	87.8	92.6	95.5
7–8	♂	74.2	77.1	81.6	85.8	90.8	95.8	99.0
	♀	74.4	76.8	80.8	85.2	90.2	95.3	98.3
8–9	♂	76.4	79.1	83.5	87.9	93.0	98.4	101.9
	♀	76.6	78.8	82.9	87.4	92.8	98.0	101.1
9–10	♂	79.0	81.5	85.9	90.4	95.6	101.4	105.2
	♀	79.1	81.3	85.4	90.3	95.8	101.1	104.2
10–11	♂	81.9	84.4	88.6	93.2	98.5	104.6	108.6
	♀	81.9	84.2	88.4	93.4	99.0	104.3	107.2
11–12	♂	84.8	87.4	91.5	96.1	101.5	107.7	111.6
	♀	84.5	87.0	91.3	96.3	101.8	106.9	109.7
12–13	♂	87.7	90.4	94.5	99.3	104.6	110.7	114.5
	♀	87.0	89.7	94.0	98.9	104.3	109.1	111.9
13–14	♂	90.8	93.6	97.8	102.8	108.0	113.9	117.5
	♀	89.5	92.3	96.6	101.3	106.4	111.2	114.0
14–15	♂	93.6	96.4	100.8	105.9	111.0	116.7	120.1
	♀	91.4	94.2	98.4	103.0	108.0	112.9	115.8
15–16	♂	95.7	98.5	103.1	108.3	113.5	118.9	122.2
	♀	92.7	95.4	99.4	104.0	109.0	114.2	117.3
16–17	♂	97.5	100.3	105.0	110.4	115.7	121.0	124.1
	♀	93.6	96.0	99.9	104.6	109.8	115.4	118.6
17–18	♂	99.2	101.9	106.6	112.2	117.9	122.9	125.9
	♀	94.3	96.4	100.1	105.0	110.5	116.4	119.8
18–19	♂	100.9	103.5	108.3	114.2	120.2	125.0	127.9
	♀	94.8	96.6	100.0	105.2	111.4	117.5	121.0