Table 1.

Odds Ratios
Age Group, years	Median Age in Group	N	PEN-NS > 0.06 mg/L	TET-R > 1 mg/L	ERY-R > 0.5 mg/L	CIP-R > 2 mg/L
0–4	0	233	1.66	1.54	1.38	0.61
5–19	11	130	1.57	1.40	1.43	0.69
20–39	33	402	1.20	1.60	1.80	0.88
40–49	45	352	1	1	1	1
50–59	55	527	2.07	2.68	2.31	1.11
60–69	65	759	1.52	1.62	1.84	1.24
70–79	74	746	2.09	2.28	2.04	1.37
>80	84	431	2.72	1.82	2.30	1.53