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Table 4 Unadjusted and adjusted incidence rate ratios for the number of trips for patients treated overseas from the United Arab Emirates through the Dubai Health Authority during 2009–2016

From: Treatment destinations and visit frequencies for patients seeking medical treatment overseas from the United Arab Emirates: results from Dubai Health Authority reporting during 2009–2016

Independent Variables Unadjusted Adjusted *
IRR 95% CI P-value IRR 95% CI P-value
Age group
 0–4 yrs. old 1.00 1.00
 5–12 yrs. old 1.00 (0.92, 1.09) 0.983 1.02 (0.94, 1.12) 0.634
 13–18 yrs. old 0.91 (0.83, 1.01) 0.075 0.95 (0.86, 1.06) 0.379
 19–39 yrs. old 0.89 (0.84, 0.95) 0.001 0.92 (0.85, 0.99) 0.031
 40–54 yrs. old 0.95 (0.88, 1.02) 0.175 0.94 (0.87, 1.03) 0.170
 55–69 yrs. old 0.91 (0.85, 0.98) 0.013 0.90 (0.82, 0.97) 0.009
 70+ yrs. old 0.79 (0.72, 0.86) < 0.001 0.78 (0.71, 0.86) < 0.001
Gender
 Female 1.00 1.00
 Male 0.98 (0.94, 1.01) 0.019 0.97 (0.94, 1.01) 0.186
Travel Season
 Summer 1.00 1.00
 Fall 0.97 (0.92, 1.02) 0.270 1.00 (0.95, 1.06) 0.945
 Winter 1.06 (1.00, 1.12) 0.033 1.07 (1.02, 1.14) 0.006
 Spring 1.03 (0.98, 1.08) 0.288 1.08 (1.02, 1.13) 0.006
Years
 Year in the data set 1.09 (1.07, 1.10) 0.000 1.09 (1.08, 1.09) < 0.001
Medical Specialty
 Orthopedic Surgery 1.00 1.00
 Internal Medicine: Oncology 1.37 (1.27, 1.47) < 0.001 1.34 (1.24, 1.44) < 0.001
 Neurosurgery 1.06 (0.98, 1.15) 0.151 1.07 (0.98, 1.16) 0.125
 Ophthalmology 1.09 (0.99, 1.20) 0.069 1.15 (1.05, 1.26) 0.003
 Neurology 0.97 (0.88, 1.08) 0.599 0.99 (0.90, 1.10) 0.898
 General Surgery 1.03 (0.93, 1.14) 0.551 1.11 (1.01, 1.23) 0.039
 Internal Medicine: Cardiology 1.02 (0.92, 1.13) 0.678 1.07 (0.96, 1.18) 0.221
 Obstetrics and Gynecology 0.98 (0.88, 1.09) 0.700 1.01 (0.90, 1.12) 0.922
 Unspecified Pediatrics 1.23 (1.10, 1.36) < 0.001 1.10 (0.97, 1.24) 0.123
 Internal Medicine: Gastroenterology 1.01 (0.90, 1.14) 0.812 1.06 (0.94, 1.19) 0.323
Urology 0.95 (0.84, 1.08) 0.448 0.97 (0.85, 1.10) 0.625
 Internal Medicine: Endocrinology 0.93 (0.81, 1.07) 0.301 0.96 (0.84, 1.10) 0.531
 Internal Medicine: Nephrology 0.99 (0.86, 1.14) 0.842 0.99 (0.86, 1.14) 0.916
 Not Specified Cases 1.04 (0.91, 1.20) 0.555 1.10 (0.95, 1.26) 0.198
 Unspecified Internal Medicine 1.06 (0.92, 1.22) 0.443 1.09 (0.95, 1.25) 0.227
 Other medical Specialties 1.10 (1.03, 1.18) 0.007 1.05 (0.978, 1.1) 0.196
  1. *Adjusted for age group, gender, travel season, years, and medical specialty using negative binomial as a model for analysis