Table 5.

The mean and 1, 2, and 3 standard deviations added and subtracted WC for boys

Age	−3 SD	−2 SD	−1 SD	mean	+1 SD	+2 SD	+3 SD
0–28 days	36.6	27.1	29.0	30.9	32.8	34.7	36.6
28 days–3 months	47.5	31.5	34.7	37.9	41.1	44.3	47.5
3–<6 m	49.8	34.8	37.8	40.8	43.8	46.8	49.8
6–<9 m	51.4	35.4	38.6	41.8	45.0	48.2	51.4
9–<12 m	53.7	36.7	40.1	43.5	46.9	50.3	53.7
12–<15 m	52.6	38.1	41.0	43.9	46.8	49.7	52.6
15–<18 m	52.5	39.0	41.7	44.4	47.1	49.8	52.5
18–<21 m	53.0	38.5	41.4	44.3	47.2	50.1	53.0
21–<24 m	52.4	39.4	42.0	44.6	47.2	49.8	52.4
24–<27 m	55.4	40.9	43.8	46.7	49.6	52.5	55.4
27–<30 m	55.5	42.5	45.1	47.7	50.3	52.9	55.5
30–<33 m	55.9	41.9	44.7	47.5	50.3	53.1	55.9
33–<36 m	56.6	42.1	45.0	47.9	50.8	53.7	56.6
36–<39 m	56.9	43.9	46.5	49.1	51.7	54.3	56.9
39–<42 m	59.9	43.4	46.7	50.0	53.3	56.6	59.9
42–45 m	58.0	44.0	46.8	49.6	52.4	55.2	58.0
45–<48 m	58.0	45.0	47.6	50.2	52.8	55.4	58.0
48–<51 m	61.1	44.6	47.9	51.2	54.5	57.8	61.1
51–<54 m	62.1	44.1	47.7	51.3	54.9	58.5	62.1
54–<57 m	64.1	44.6	48.5	52.4	56.3	60.2	64.1
57–<60 m	61.6	46.6	49.6	52.6	55.6	58.6	61.6
60–<63 m	64.4	45.4	49.2	53.0	56.8	60.6	64.4
63–<66 m	64.1	45.1	48.9	52.7	56.5	60.3	64.1
66–<69 m	70.8	43.3	48.8	54.3	59.8	65.3	70.8
69–<72 m	64.8	44.3	48.4	52.5	56.6	60.7	64.8
72–<75 m	65.4	46.4	50.2	54.0	57.8	61.6	65.4
75–<78 m	63.6	45.1	48.8	52.5	56.2	59.9	63.6
78–<81 m	68.7	45.7	50.3	54.9	59.5	64.1	68.7
81–<84 m	69.6	45.6	50.4	55.2	60.0	64.8	69.6