. Author manuscript; available in PMC: 2022 Mar 1.

Published in final edited form as: Arthritis Rheumatol. 2021 Jan 29;73(3):440–447. doi: 10.1002/art.41520

Table 4 -.

Age-Specific Incidence Rates of Erosive Hand Osteoarthritis by Sex and Female-to-Male Incidence Ratios.

Age (years)	Male		Female		Female-to-male ratio (95% CI)
Age (years)	N cases	Rate Per 1000	N cases	Rate Per 1000	Female-to-male ratio (95% CI)
< 20	2	0.002	8	0.007	4.135 (0.878, 19.472)
20–29	11	0.02	10	0.016	0.790 (0.336, 1.860)
30–39	7	0.012	16	0.026	2.073 (0.853, 5.038)
40–49	34	0.07	76	0.149	2.129 (1.421, 3.189)
50–59	79	0.182	388	0.851	4.676 (3.671, 5.956)
60–69	144	0.37	728	1.753	4.730 (3.956, 5.655)
70–79	151	0.646	519	1.993	3.080 (2.570, 3.693)
80–89	49	0.436	178	1.281	2.936 (2.140, 4.028)
90+	7	0.252	17	0.378	1.475 (0.612, 3.558)