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Table 3 Characteristics of the study population

From: Gender-specific mortality in DTP-IPV- and MMR ± MenC-eligible age groups to determine possible sex-differential effects of vaccination: an observational study

Characteristic Boys Girls Total
n (%) n (%) N (%)
Population 0–11 yr 3,188,004 3,073,468 6,261,472
Indigenous Dutch 2,292,021 (71.9) 2,189,282 (71.2) 4,481,303 (71.6)
1st generation immigrant 306,934 (9.6) 322,167 (10.5) 629,101 (10.0)
2nd generation immigrant 589,049 (18.5) 562,019 (18.3) 1,151,068 (18.4)
Deaths 7,924 6,114 14,038
0-1 monthsa 4,713 (59.9) 3,688 (60.3) 8,401 (59.8)
2-13 monthsb 1,143 (14.4) 870 (14.2) 2,013 (14.3)
14 months – 3 yearsc 902 (11.4) 671 (11.0) 1,573 (11.2)
4-8 yearsd 766 (9.7) 557 (9.1) 1,323 (9.4)
9-11 yearse 400 (5.0) 328 (5.4) 728 (5.2)
Primary cause of death    
Unknown 128 (1.6) 122 (2.0) 250 (1.8)
Infectious and parasitic diseases 203 (2.6) 171 (2.8) 374 (2.7)
Neoplasms 512 (6.5) 393 (6.4) 905 (6.4)
Diseases of the blood and blood forming organs and certain disorders involving the immune mechanism 53 (0.7) 46 (0.8) 99 (0.7)
Endocrine, nutritional and metabolic diseases 196 (2.5) 148 (2.4) 344 (2.5)
Mental and behavioural disorders 23 (0.3) 19 (0.3) 42 (0.3)
Diseases of the nervous system 383 (4.8) 337 (5.5) 720 (5.1)
Diseases of the circulatory system 176 (2.2) 134 (2.2) 310 (2.2)
Diseases of the respiratory system 162 (2.0) 125 (2.0) 287 (2.0)
Diseases of the digestive system and the genitourinary system 99 (1.2) 61 (1.0) 160 (1.1)
Diseases of the skin, subcutaneous tissue, musculoskeletal system and connective tissue 13 (0.2) 17 (0.3) 30 (0.2)
Complications of the pregnancy, childbirth and the puerperium and conditions originating in the perinatal period 2,973 (37.5) 2,192 (35.9) 5,165 (36.8)
Congenital anomalies 1,926 (24.3) 1,630 (26.7) 3,556 (25.3)
Symptoms, signs and ill-defined conditions 426 (5.4) 332 (5.4) 758 (5.4)
External causes of injury and poisoning 651 (8.2) 387 (6.3) 1,038 (7.4)
  1. aMost recent vaccination: none.
  2. bMost recent vaccinations: DTaP(−HBV)-IPV/Hib and pneumococcal vaccination.
  3. cMost recent vaccinations: MMR and meningococcal C vaccination (only after September 2002).
  4. dMost recent vaccination: DTaP-IPV booster vaccination.
  5. eMost recent vaccinations: DT-IPV booster and MMR booster vaccination.