TABLE 1

Description of Demographic and Socioeconomic Predictors in the Study Population Stratified by Baseline Fracture Status

VariableOverall, n (%)Baseline Fracture, n (%)No Baseline Fracture, n (%)P
Overall2 462 56443 154 (1.75)2 419 410 (98.25)
Age at baseline, y
 0–2406 760 (16.52)3137 (7.27)403 623 (16.68)
 3–5433 793 (17.62)5093 (11.80)428 700 (17.72)
 6–8471 757 (19.16)6981 (16.18)464 776 (19.21)<.001
 9–11493 448 (20.04)11 140 (25.81)482 308 (19.93)
 12–15656 810 (26.67)16 803 (38.94)640 007 (26.45)
Sex
 Female1 200 464 (48.75)15 555 (36.05)1 184 909 (48.98)<.001
 Male1 262 104 (51.25)27 599 (63.95)1 234 505 (51.02)
Rurality
 Urban2 133 004 (86.95)35 986 (83.48)2 097 018 (87.01)<.001
 Rural320 083 (13.05)7119 (16.52)312 964 (12.99)
Previous fracture history
 No2 276 000 (92.42)35 725 (82.78)2 240 275 (92.6)<.001
 Yes186 568 (7.58)7429 (17.22)179 139 (7.40)
Socioeconomic indicators
 Neighborhood income quintile
  1 (lowest)477 905 (19.56)7280 (16.95)470 625 (19.60)
  2463 963 (18.99)7894 (18.37)456 069 (19.00)
  3489 795 (20.04)8837 (20.57)480 958 (20.03)<.001
  4517 517 (21.18)9270 (21.58)508 247 (21.17)
  5 (highest)494 422 (20.23)9680 (22.53)484 742 (20.19)
 ON-Marg deprivation quintile
  1 (least)687 806 (28.78)11 994 (28.59)675 812 (28.78)
  2538 936 (22.55)9969 (23.76)528 967 (22.53)
  3451 613 (18.90)8242 (19.65)443 371 (18.88)<.001
  4376 516 (15.76)6597 (15.73)369 919 (15.76)
  5 (most)334 940 (14.02)5147 (12.27)329 793 (14.05)
 ON-Marg dependency quintile
  1 (least)725 930 (30.38)11 163 (26.61)714 767 (30.44)
  2528 201 (22.10)9109 (21.71)519 092 (22.11)
  3466 923 (19.54)8721 (20.79)458 202 (19.52)<.001
  4371 590 (15.55)7160 (17.07)364 430 (15.52)
  5 (most)297 167 (12.43)5796 (13.82)291 371 (12.41)
 ON-Marg ethnic concentration quintile
  1 (least)271 450 (11.36)5868 (13.99)265 582 (11.31)
  2396 469 (16.59)8430 (20.10)388 039 (16.53)
  3416 902 (17.44)8453 (20.15)408 449 (17.40)<.001
  4517 598 (21.66)9006 (21.47)508 592 (21.66)
  5 (most)787 392 (32.95)10 192 (24.30)777 200 (33.10)
 ON-Marg instability quintile
  1 (least)688 325 (28.80)12 384 (29.52)675 941 (28.79)
  2561 808 (23.51)10 525 (25.09)551 283 (23.48)
  3434 556 (18.18)7748 (18.47)426 808 (18.18)<.001
  4 454 246 (19.01)7461 (17.79)446 785 (19.03)
  5 (most)250 876 (10.50)3831 (9.13)247 045 (10.52)
  • —, not significant.