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Table 1 Characteristics of the study participants according to residential and individual exposure to the Prestige oil-spill

From: Health-related quality of life and mental health in the medium-term aftermath of the Prestige oil spill in Galiza (Spain): a cross-sectional study

  Residential exposure Individual exposure
  Interior (n = 1350) Coast (n = 1350)   Unaffected (n = 865) Slightly affected (n = 1408) Seriously affected (n = 427)  
  N % N % p N % N % N % p
Sex      0.878        <0.001
   Men 684 50.7 688 51.0   437 50.5 671 47.7 264 61.8  
   Women 666 49.3 662 49.0   428 49.5 737 52.3 163 38.2  
Age (years)      0.948        <0.001
   18–29 408 30.2 405 30.0   213 24.6 469 33.3 131 30.7  
   30–44 482 35.7 477 35.3   283 32.7 514 36.5 162 37.9  
   45–60 460 34.1 468 34.7   369 42.7 425 30.2 134 31.4  
Education (age of termination)      < 0.001        <0.001
   No formal education 82 6.1 190 14.3   96 11.2 117 8.4 59 14.2  
   < 15 years 627 46.7 582 43.9   445 51.8 593 42.5 171 41.2  
   16–19 years 343 25.5 318 24.0   190 22.1 358 25.7 113 27.2  
   >19 non-university 181 13.5 147 11.1   72 8.4 211 15.1 45 10.8  
   University 110 8.2 89 6.7   56 6.5 116 8.3 27 6.5  
Work status      < 0.001        0.004
   Workers, students or housewives 1178 87.3 1076 79.8   747 86.4 1155 82.1 352 82.4  
   Unemployed or first-time job-seekers 104 7.7 161 11.9   57 6.6 161 11.5 47 11.0  
   Retirees and pensioners 68 5.0 111 8.2   61 7.1 90 6.4 28 6.6  
Occupation: fishing      < 0.001        < 0.001
   Yes 1 0.1 152 17.2   5 0.9 26 2.8 122 37.3  
   No 937 98.5 718 81.4   566 97.9 892 96.1 197 60.2  
Tobacco      < 0.001        <0.001
   Never smoker 851 63.0 667 49.4   548 63.6 793 56.4 177 42.0  
   Ex-smoker 127 9.4 174 12.9   81 9.4 158 11.2 62 14.7  
   Current smoker 366 27.1 502 37.2   232 26.9 454 32.3 182 43.2  
Hours of sleep daily      <0.001        0.002
   < 7 hours 174 12.9 239 17.7   132 15.3 190 13.5 91 21.3  
   7 – 9 hours 931 69.0 929 68.8   585 67.6 1001 71.09 274 64.2  
   > 9 hours 245 18.1 182 13.5   148 17.1 217 15.4 62 14.5  
Reported morbidity             
   Arterial hypertension 119 8.8 96 7.1 0.103 80 9.3 107 7.6 28 6.6 0.189
   Hypercholesterolemia 135 10.0 125 9.3 0.518 94 10.9 126 9.0 40 9.4 0.322
   Diabetes mellitus 31 2.3 51 3.8 0.025 32 3.7 34 2.4 16 3.8 0.147
   Asthma or bronchitis 35 2.6 62 4.6 0.005 25 2.9 51 3.6 21 4.9 0.183
   Heart diseases 35 2.6 37 2.8 0.809 22 2.5 40 2.9 10 2.3 0.819
   Stomach ulcer 31 2.3 24 1.8 0.342 16 1.9 30 2.1 9 2.1 0.891
   Allergy 99 7.4 126 9.4 0.059 56 6.5 122 8.7 47 11.0 0.017
   Cancer 4 0.3 5 0.4 0.738 0 0.0 6 0.4 3 0.7 0.036
   Anxiety, distress, nerves 102 7.6 94 7.0 0.557 63 7.3 107 7.6 26 6.1 0.568
   Depression 61 4.5 78 5.8 0.137 52 6.0 68 4.9 19 4.5 0.364
   Insomnia 62 4.6 58 4.3 0.712 46 5.3 58 4.1 16 3.8 0.305
Residential exposure             <0.001
   Interior       689 79.7 648 46.0 13 3.0  
   Coast       176 20.4 760 54.0 414 97.0