Table 5.

Association of age and number of positive LNs in node-positive patients in SEER dataset.

Age, year	N	Mean	SEM	RR(95% CI)	P
T1: stratification by Race
White (n=649)
18-39	14	3.857	1.292	1.341 (1.010-1.782)	0.043
40-49	34	2.912	0.576	1.050 (0.845-1.304)	0.661
50-59	89	2.326	0.264	0.895 (0.759-1.054)	0.184
60-69	189	2.540	0.318	Reference
70-79	216	2.505	0.253	1.032 (0.913-1.168)	0.612
80+	107	3.308	0.443	1.515 (1.318-1.743)	<0.001
P*		0.363
T2 (n=2433)
18-39	48	3.375	1.051	1.771 (1.073-2.923)	0.025
40-49	158	2.595	0.395	1.250 (0.920-1.698)	0.153
50-59	373	2.123	0.199	1.096 (0.872-1.377)	0.434
60-69	593	1.750	0.157	Reference
70-79	740	1.445	0.101	0.645 (0.517-0.806)	0.0001
80+	521	1.511	0.136	0.976 (0.780-1.221)	0.83
P*		<0.0001
T3 (n=6503)
18-39	168	6.286	0.494	1.111 (1.042-1.185)	0.0013
40-49	519	5.337	0.300	0.972 (0.931-1.015)	0.202
50-59	1066	5.460	0.211	0.989 (0.956-1.022)	0.504
60-69	1616	5.033	0.168	Reference
70-79	1875	4.341	0.146	0.949 (0.920-0.979)	0.001
80+	1259	3.770	0.159	0.903 (0.871-0.937)	<0.0001
P*		<0.0001
T4 (n=4939)
18-39	181	6.773	0.465	1.239 (1.161-1.323)	<0.0001
40-49	436	7.982	0.440	1.225 (1.152-1.302)	<0.0001
50-59	849	7.840	0.302	1.276 (1.202-1.354)	<0.0001
60-69	1173	7.812	0.256	Reference
70-79	1370	7.466	0.236	1.296 (1.222-1.376)	<0.0001
80+	930	6.316	0.235	1.293 (1.215-1.375)	<0.0001
P*		<0.0001

*P-value from the one-way ANOVA test. RR, Rate Ratio.