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Table 4 Multivariate Analysisa of acute respiratory diseaseb. Classification by three SES parameters

From: Health impacts from living near a major industrial park in Oman

SES classification

RRc (95 % CI)

≤50 % ‘no education’ strata

1.90 (1.80–2.01)

>50 % ‘no education’ strata

2.11 (1.95–2.28)

≤50 % ‘high education’ strata

2.21 (2.06–2.38)

>50 % ‘high education’ strata

1.73 (1.63–1.84)

≤50 % ‘employment’ strata

2.33 (2.20–2.48)

>50 % ‘employment’ strata

1.62 (1.51–1.73)

  1. aAdjusted for time trend and smoking prevalence
  2. bAge and gender standardized according to census population figures for 2010
  3. cRisk ratio of combined exposure zones in reference to control exposure zone
  4. RR risk ratio; CI confidence interval