Skip to main content

Table 1 Distribution by zygosity, sex, THA and vital status

From: Probability and heritability estimates on primary osteoarthritis of the hip leading to total hip arthroplasty: a nationwide population based follow-up study in Danish twins

THA by zygosity Distribution by sex Distribution by vital status
Zygosity Males (n) Females (n) (%) Total by sex (n) Males alive (n) Males dead (n) Females alive (n) Females dead (n) Total by vital status (n)
MZ + THA 88 90 (51) 178 71 17 72 18 178
MZ – THA 9861 10,288 (51) 20,149 8671 1190 9059 1229 20,149
DZ + THA 184 189 (51) 373 141 43 155 34 373
DZ – THA 18,015 16,975 (49) 34,990 15,417 2598 14,486 2489 34,990
OS + THA 135 149 (52) 284 120 16 136 12 284
OS – THA 19,005 19,084 (50) 38,089 17,491 1514 17,892 1192 38,089
Total 47,288 46,775 (50) 94,063 41,911 5378 41,799 4974 94,063
  1. DZ same-sex dizygotic, MZ monozygotic, OS opposite-sex dizygotic, + THA Total hip arthroplasty, – THA No hip arthroplasty