Table 1

Reported STI and high school graduation rates (HS) and primary care physician density (PCP) in Delta Region (DR) versus non-Delta Region (non-DR) counties, 2010–2014, stratified by state

Area	County designation	Chlamydia		Gonorrhoea		Syphilis		HS		Population per PCP
All DR states	DR (252)	<0.001	577.8	< 0.001	142.8	< 0.001	3.6	< 0.001	75.2	0.262	3199.2
All DR states	non-DR (467)	<0.001	330.1	< 0.001	61.8	< 0.001	1.7	< 0.001	81.2	0.262	3099.4
Alabama	DR	<0.001	891.2	<0.001	209.7	0.055	4.0	0.025	69.3	0.131	3360.0
Alabama	non-DR	<0.001	475.1	<0.001	111.6	0.055	2.7	0.025	71.7	0.131	2890.0
Arkansas	DR	<0.001	575.2	0.006	153.1	0.242	5.5	0.101	81.2	0.955	2617.3
Arkansas	non-DR	<0.001	460.6	0.006	115.1	0.242	4.3	0.101	82.8	0.955	2604.8
Illinois	DR	0.002	410.9	0.092	64.6	0.904	1.1	0.001	81.7	0.280	2996.1
Illinois	non-DR	0.002	302.4	0.092	51.1	0.904	1.2	0.001	84.8	0.280	2694.7
Kentucky	DR	<0.001	403.2	<0.001	70.8	0.006	0.5	0.001	84.6	0.493	3339.7
Kentucky	non-DR	<0.001	252.9	<0.001	36.3	0.006	1.0	0.001	82.0	0.493	3152.3
Louisiana	DR	0.701	563.9	0.841	164.7	0.056	5.5	0.003	68.0	<0.001	3131.4
Louisiana	non-DR	0.701	581.8	0.841	160.8	0.056	10.5	0.003	71.7	<0.001	1917.2
Mississippi	DR	<0.001	837.1	<0.001	212.6	0.234	4.1	0.002	67.6	0.384	3168.4
Mississippi	non-DR	<0.001	559.6	<0.001	146.7	0.234	3.4	0.002	70.5	0.384	3371.1
Missouri	DR	0.033	226.4	0.140	43.4	0.902	0.5	<0.001	83.9	0.318	4324.4
Missouri	non-DR	0.033	255.9	0.140	35.4	0.902	0.5	<0.001	86.8	0.318	3970.2
Tennessee	DR	<0.001	528.4	<0.001	113.2	0.001	2.4	0.043	79.4	0.752	2887.8
Tennessee	non-DR	<0.001	264.9	<0.001	32.6	0.001	1.1	0.043	81.5	0.752	2957.8

Independent sample T-test.