Table III.

Nonunion rates in 2019 divided by anatomical localization.

Anatomical localization	n	Incidence per 100,000 inhabitants (95% CI)	Incidence in 2019 relative to 2009, %	IRR relative to 2009 (95% CI), p-value*	Female/ male, % (n)	IRR female/ male (95% CI), p-value*	Aged ≤ 70 years/> 70 years, % (n)	IRR aged ≤ 70 yrs/> 70 yrs (95% CI), p-value*
All	11,840	17.4 (17.1 to 17.8)	-1	0.99 (0.51 to 1.93), 0.986	45/55 (5,365/6,475)	0.79 (0.76 to 0.82), 0.484	78/22 (9,208/2,632)	0.15 (0.14 to 0.16), 0.178
Shoulder	912	1.3 (1.3 to 1.4)	-16	0.84 (0.77 to 0.92), 0.559	40/60 (362/550)	0.63 (0.55 to 0.72), 0.711	88/12 (803/109)	3.37 (2.76 to 4.12), 0.119
Upper arm	905	1.3 (1.3 to 1.4)	-10	0.90 (0.82 to 0.98), 0.536	59/41 (531/374)	1.35 (1.18 to 1.54), 0.810	63/37 (573/332)	0.68 (0.60 to 0.78), 0.509
Forearm	859	1.3 (1.2 to 1.4)	-18	0.82 (0.75 to 0.89), 0.567	48/52 (412/447)	0.88 (0.77 to 1.00), 0.540	81/19 (692/167)	1.96 (1.65 to 2.32), 0.330
Hand	1,997	2.9 (2.8 to 3.0)	-10	0.90 (0.85 to 0.95), 0.553	18/82 (349/1,648)	0.20 (0.18 to 0.22), 0.928	98/2 (1,961/36)	29.73 (21.38 to 41.34), 0.008
Pelvis and hip	2,454	3.6 (3.5 to 3.8)	+9	1.09 (1.03 to 1.15), 0.456	59/41 (1,455/999)	1.39 (1.28 to 1.50), 0.334	51/49 (1,242/1,212)	0.35 (0.33 to 0.38), 0.003
Lower leg	1,927	2.8 (2.7 to 3.0)	-7	0.94 (0.88 to 1.00), 0.532	40/60(776/1,151)	0.64 (0.59 to 0.70), 0.698	86/14 (1,656/271)	3.11 (2.73 to 3.53), 0.032
Ankle and foot	1,985	2.9 (2.8 to 3.0)	+17	1.17 (1.10 to 1.25), 0.427	57/43 (1,127/858)	1.25 (1.14 to 1.37), 0.394	86/14 (1,714/271)	3.62 (3.19 to 4.12), 0.019
Other, not specified	801	1.3 (1.2 to 1.4)	+36	1.51 (1.35 to 1.69), 0.388	44/56 (352/449)	0.75 (0.65 to 0.86), 0.826	71/29 (569/232)	0.74 (0.63 to 0.86), 0.596

Statistical significance set at p < 0.01.

^*Two-sample z-test.

CI, confidence interval; IRR, Incidence rate ratio.