Table 6.
Percentage of black non-Hispanic low birth weight [LBW] (total number of births) and Q4–Q1, Q3–Q1 risk differences [RD] (95% confidence intervals [CI]) in each quartile [Q] of deprivation by MODE-PTD study area
| Prince George’s All-site deprivation index quartiles | Baltimore City, MD 1999–2001 | Baltimore County, MD 1999–2001 | Montgomery County, MD 1999–2001 | Prince George’s County, MD 1999–2001 | MI-16 cities 1995, 1998–1999 | Durham County, NC 1999–2001 | Wake County, NC 1999–2001 | Philadelphia, PA 1999–2000 |
|---|---|---|---|---|---|---|---|---|
| Q1: [-1.85]–[-0.81] | * | 9.9 (910) | 8.7 (2,429) | 8.5 (4,378) | 10.2 (919) | 10.5 (628) | 9.8 (2,390) | 9.0 (267) |
| Q2: [-0.80]–[-0.173] | 12.0 (2,468) | 10.5 (2,942) | 9.1 (1,809) | 10.1 (5,711) | 11.2 (4,097) | 11.9 (1,137) | 11.0 (2,106) | 9.4 (2,287) |
| Q3: [-0.17]–0.76 | 12.9 (6,786) | 9.5 (745) | 8.3 (696) | 10.2 (6,325) | 11.9 (17,339) | 13.7 (1,307) | 12.8 (1,246) | 11.6 (6,240) |
| Q4: 0.77–3.72 | 14.4 (8,706) | * | ** | 9.7 (154) | 13.3 (32,507) | 14.8 (1,301) | 14.4 (561) | 13.8 (11,051) |
| P for trend | P < 0.001 | P = 0.87 | P = 0.93 | P = 0.01 | P < 0.001 | P < 0.001 | P < 0.001 | P < 0.001 |
| Q3–Q1 RD (95% CI) | * | -0.4 (-2.3, 1.5) | -0.4 (-1.5, 0.7) | 1.7 (0.9, 2.5) | 1.7 (0.3, 3.7) | 3.2 (0.2, 6.2) | 3.0 (0.8, 5.2) | 2.6 (-0.9, 6.1) |
| Q4–Q1 RD (95% CI) | * | * | ** | 1.2 (-3.5, 5.9) | 3.1 (1.1, 5.1) | 4.3 (1.2, 7.4) | 4.6 (1.5, 7.7) | 4.8 (1.3, 8.3) |
| Percent LBW (# LBW/Total) | 13.5 (2,443/ 18,038) | 10.2 (471/ 4,599) | 8.8 (435/4,934) | 9.7 (1,609/ 16,568) | 12.7 (6,949/ 54,862) | 13.1 (572/4,373) | 11.2 (707/ 6,303) | 12.5 (2,482/ 19,845) |
*Data not shown; fewer than 100 births in deprivation quartile.
**No tracts fell into this deprivation quartile.