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Table 1 Baseline characteristics of the study population

From: Prenatal maternal bereavement and risk of eating disorders in infants and toddlers: a population-based cohort study

  Denmark   Sweden  
Characteristics Exposed Unexposed P value Exposed Unexposed P value
(N = 29,475) (N = 2,097,651) (N = 56,542) (N = 2,918,366)
N (%) N (%) N (%) N (%)
Sex
 Boy 14,981(51) 1,076,217(51)   29,006(51) 1,499,551(51)  
 Girl 14,494(49) 1,021,434(49) 0.10 27,536(49) 1,418,815(49) 0.69
Maternal age (years)
 15–26 7,924(27) 708,240(34)   15,422(27) 1,073,318(37)  
 27–30 8,613(29) 640,409(31)   15,617(28) 849,158(29)  
 31–59 12,938(44) 749,002(36) <0.01 25,503(45) 995,890(34) <0.01
Paternal age (years)
 15–28 7,393(25) 622,992(30)   15,161(27) 976,972(33)  
 29–33 10,191(35) 726,459(35)   18,847(33) 986,054(34)  
  ≥ 34 11,137(38) 681,103(32)   22,201(39) 935,866(32)  
 Unknown 754(3) 67,097(3) <0.01 333(1) 19,474(1) <0.01
Parity
 1 11,035(37) 979,756(47)   18,131(32) 1,223,966(42)  
 2 11,723(40) 778,384(37)   21,144(37) 1,056,861(36)  
  ≥ 3 6,711(23) 333,485(16)   17,265(31) 637,471(22)  
 Unknown 6(0) 6,026(0) <0.01 2(0) 68(0) <0.01
Number of fetuses in the pregnancy
 Singleton 28,099(95) 1,898,839(91)   55,091(97) 2,846,323(98)  
 Multiple 953(3) 64,731(3)   1,446(3) 71,866(2)  
 Unknown 423(1) 134,081(6) <0.01 5(0) 177(0) 0.25
Maternal countries of origin
 Nordic 29,275(99) 2,074,856(99)   54,543(96) 2,603,304(89)  
 Others 194(1) 13,129(1)   1,963(3) 302,486(10)  
 Unknown 6(0) 9,666(0) <0.01 36(0) 12,576(0) <0.01
Family history of psychiatric disorders
 No 26,173(89) 1,912,542(91)   51,896(92) 2,717,203(93)  
 Yes 3,302(11) 185,109(9) <0.01 4,646(8) 201,163(7) <0.01
Maternal education
  ≤ 9 years 8,662(29) 546,022(26)   10,196(18) 487,899(17)  
 10–14 years 12,601(43) 825,834(39)   36,664(65) 1,823,765(62)  
  ≥ 15 years 6,821(23) 438,799(21)   8,620(15) 403,798(14)  
 Unknown 1,391(5) 286,996(14) <0.01 1,062(2) 202,904(7) <0.01