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Table 3 Hurdle model: all-cause ED contacts by origin area and time-period, 2005–2015

From: Disparities in emergency department use between Italians and migrants residing in Rome, Italy: the Rome Dynamic Longitudinal Study from 2005 to 2015

  

Zero-part model

 

Count-part model

N

OR

95% CI

N

RR

95% CI

Origin area

 Italya

 HDCb

48,256

0.23

(0.22–0.24)

8893

0.65

(0.61–0.70)

 Africa

76,575

0.52

(0.50–0.53)

24,219

1.46

(1.40–1.52)

 Latin-America

62,904

0.72

(0.70–0.73)

26,586

1.04

(1.00–1.08)

 Asia

62,904

0.43

(0.43–0.44)

50,093

0.80

(0.78–0.83)

 Central-Eastern Europe

213,961

0.55

(0.54–0.55)

83,619

0.96

(0.93–0.98)

Time-period

 Pre-2008a

 Post-2008

2,035,479

1.34

(1.34–1.35)

989,346

0.96

(0.96–0.97)

 N observations

3,772,584

  

1,735,368

  
  1. a Reference category
  2. b Highly Developed Countries
  3. Adjusted for: gender and age.
  4. Zero-part model reports odds ratios for the outcome variable indicating persons without (Y = 0) or with Emergency Department experience (Y = 1, where all values larger than 0 are censored, which means, are fixed at 1), while the Count-part model, which reports rate ratios, models the number of Emergency Department experiences for those with Emergency Department experiences (for those with Y > 0)