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Table 1 Demographic profile of the 2000 Graniteville Census population versus GRACE health screening participants versus those that participated in the SCDHEC voluntary health registry

From: Respiratory symptoms and lung function 8–10 months after community exposure to chlorine gas: a public health intervention and cross-sectional analysis

Demographic characteristics Immediate medical care N (%) GRACE health screening vs. immediate medical care p-value GRACE health screening N (%) GRACE health screening vs. SCDHEC registry p-value SCDHEC registry N (%)
N 860   259   958
Mean age (years) 38.2 (19.5)   47.4 (20.0)   41.6 (22.6)
Under 5 43 (5.1) 0.0114 9 (3.5) 0.0534 42 (4.4)
5-17 88 (10.4) <0.0001** 44 (17) 0.0250 196 (20.5)
18-65 648 (76.9) <0.0001** 153 (59) 0.0152 569 (59.4)
Over 65 64 (7.6) <0.0001** 53 (20.5) 0.0308 150 (15.7)
Gender      
Female 371 (45.3) <0.0001** 114 (55.6) 0.0159 489 (51)
Male 448 (54.7) <0.0001** 115 (44.4) 0.0165 469 (49)
Race      
White 433 (61.2) 0.5801 165 (63.6) 0.0139 661 (68.9)
Black 237 (33.5) 0.0470 82 (31.8) 0.0240 245 (25.6)
Hispanic/other 36 (5.1) 0.0699 12 (4.6) 0.0481 53 (5.5)
Education      
< 9th Grade 109 (15.4) <0.0001** 27 (10.3) 0.0376 95 (9.9)
Some high school 138 (19.5) 0.6999 52 (20.1) 0.0258 196 (20.5)
High school grad 276 (39.0) 0.7191 103 (39.7) 0.0182 394 (41.1)
College/2 yr 129 (18.2) 0.0135 57 (22.1) 0.0281 177 (18.5)
Bachelors 47 (6.6) 0.1421 14 (5.4) 0.0420 67 (7)
Post-graduate 8 (1.1) 0.0198 6 (2.5) 0.0654 28 (2.9)
  1. **Significant with Bonferroni multiple comparison correction = 0.0033 (α = 0.05).
  2. P values represent Chi-square results between demographic groups.