Table 3.

Height in MPS II (severe vs. attenuated)

	Severe			Attenuated			t-test
Age (years)	n	mean (cm)	SD	n	mean (cm)	SD	p=
At birth	68	50.29	1.47	28	50.13	1.07	0.5423
1 month	12	56.50	1.57	4	56.50	2.38	1.0000
3.5 month	57	66.23	2.55	21	65.06	2.21	0.0539
6.5 month	45	71.76	1.96	19	71.67	1.82	0.8619
9.5 month	41	76.44	2.81	13	75.52	2.01	0.2066
1y	43	80.04	2.56	16	77.81	2.58	0.0064
1.5 y	58	84.93	2.87	19	84.07	2.53	0.2220
2y	39	89.16	3.03	10	87.95	3.42	0.3253
2.5y	4	94.25	4.35	0	N/A	N/A	N/A
3y	45	97.35	2.37	17	97.51	3.33	0.8605
4y	26	101.88	4.14	12	102.03	2.80	0.8979
5y	20	107.77	5.82	12	105.85	2.88	0.2249
6y	17	112.74	5.31	15	111.19	3.30	0.3226
7y	11	112.55	5.28	5	112.80	6.53	0.9413
8y	11	114.98	4.06	11	116.99	6.17	0.3791
9y	3	115.33	6.11	5	114.80	5.89	0.9092
10y	9	117.64	3.82	6	117.55	6.81	0.9762
11y	4	119.50	6.81	2	115.50	7.78	0.6046
12y	7	117.83	2.27	5	120.50	5.15	0.3260
13y	2	117.00	1.41	2	125.50	2.12	0.0546
14y	8	116.69	4.28	1	130.40	N/A	N/A
15y	3	117.33	5.69	3	123.00	11.14	0.4902
16y	3	115.70	5.17	3	131.57	10.03	0.0930
18y	4	121.00	9.90	12	127.17	8.70	0.3205