Table 2

TB rates by U.S. Census SES variables for foreign-born and U.S.-born persons, 1996–2005
TB rate per 100 000
Foreign-Born U.S.-Born Rate Ratio
(95% CI*) (95% CI) (95% CI)
(n = 75,246) (n = 68,333)
Overall 25.8 (25.3, 26.4) 3.94 (3.91, 3.98) 6.55 (6.47, 6.63)
Education
 1 (Low SES) 27.2 (26.2, 28.3) 8.18 (8.06, 8.30) 3.33 (3.26, 3.41)
 2 27.9 (26.7, 29.0) 4.31 (4.24, 4.39) 6.46 (6.31, 6.61)
 3 26.0 (24.8, 27.2) 2.65 (2.60, 2.70) 9.82 (9.57, 10.1)
 4 (High SES ) 21.6 (20.5, 22.7) 1.71 (1.68, 1.75) 12.6 (12.2, 13.0)
Crowding
 1 (Low SES) 27.5 (26.5, 28.5) 7.66 (7.54, 7.78) 3.59 (3.51, 3.66)
 2 25.0 (23.9, 26.2) 4.12 (4.04, 4.19) 6.08 (5.92, 6.25)
 3 23.1 (21.9, 24.3) 2.30 (2.26, 2.35) 10.0 (9.72, 10.3)
 4 (High SES ) 19.4 (18.3, 20.6) 1.31 (1.27, 1.34) 14.9 (14.4, 15.4)
Income§
 1 (Low SES) 28.1 (27.1, 29.1) 8.83 (8.70, 8.96) 3.18 (3.11, 3.25)
 2 27.7 (26.6, 28.9) 3.65 (3.58, 3.71) 7.60 (7.42, 7.79)
 3 25.3 (24.1, 26.5) 2.29 (2.25, 2.34) 11.0 (10.7, 11.3)
 4 (High SES ) 21.3 (20.2, 22.4) 1.81 (1.77, 1.85) 11.8 (11.4, 12.1)
Unemploymentll
 1 (Low SES) 27.7 (26.7, 28.7) 8.74 (8.62, 8.87) 3.17 (3.10, 3.24)
 2 26.6 (25.5, 27.7) 3.56 (3.50, 3.62) 7.46 (7.29, 7.64)
 3 24.3 (23.2, 25.5) 2.16 (2.11, 2.20) 11.3 (11.0, 11.6)
 4 (High SES) 21.6 (20.4, 22.8) 1.21 (1.18, 1.25) 17.7 (17.2, 18.3)

* Confidence interval.

Percentage of the total population 25 and over in the ZIP Code Tabulation Area (ZCTA) with any college attendance, 1 = smallest percentage with any college, 4 = largest percentage with any college.

Percentage of housing units in the ZCTA with one or more persons per room, 1 = largest percentage with crowding, 4 = smallest percentage with crowding.

§ Per capita income in 1999 in the ZCTA, 1 = least income, 4 = most income.

ll Percentage of the total population in the ZCTA civilian labor force that is unemployed, 1 = largest percentage of unemployed, 4 = smallest percentage of unemployed.

Olson et al.

Olson et al. BMC Public Health 2012 12:365   doi:10.1186/1471-2458-12-365

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