Table 3. Age- and sex-specific observed incidence rates of major osteoporotic fracture as compared to those predicted by the imputation method.

	Hip observed		MOF observed		MOF predicted *
	N	IR	N	IR	N	IR	SIR (95% CI)
Women
50–54	35	2.1	363	22.2	383	23.4	0.95 (0.85–1.05)
55–59	47	3.0	552	35.6	481	31.0	1.15 (1.05–1.25)
60–64	94	6.7	717	52.2	507	36.9	1.41 (1.31–1.52)
65–69	103	9.3	682	63.2	454	42.1	1.50 (1.39–1.62)
70–74	178	19.3	763	85.3	625	69.9	1.22 (1.14–1.31)
75–79	254	35.6	795	115.8	586	85.4	1.36 (1.26–1.45)
80–84	330	72.3	729	167.4	598	137.3	1.22 (1.13–1.31)
85–89	263	116.5	477	223.6	460	215.6	1.04 (0.95–1.13)
90+	199	229.1	295	361.4	335	410.1	0.88 (0.78–0.99)
Men
50–54	36	2.1	261	15.0	160	9.2	1.63 (1.44–1.84)
55–59	66	3.8	307	18.0	280	16.4	1.10 (0.98–1.23)
60–64	63	4.0	305	19.7	338	21.9	0.90 (0.80–1.01)
65–69	51	4.3	216	18.5	177	15.1	1.22 (1.06–1.39)
70–74	95	10.6	246	27.7	243	27.4	1.01 (0.89–1.15)
75–79	112	18.5	240	40.1	230	38.4	1.05 (0.92–1.19)
80–84	121	38.9	204	66.4	198	64.6	1.03 (0.89–1.18)
85–89	82	71.7	129	114.7	163	144.8	0.79 (0.66–0.94)
90+	37	117.7	51	166.7	62	203.6	0.82 (0.61–1.08)

Abbreviations: IR; incidence rate, 95% CI; 95% Confidence Interval, MOF; major osteoporotic fracture (first fracture of the hip, clinical spine, humerus, or forearm, according to the FRAX® definition), SIR; standardized incidence ratio

*Predicted MOF rates were calculated by multiplying observed hip fracture rates by the age-and-sex-specific Swedish incidence rate ratios for first hip fracture to a first MOF. The expected number of MOF fractures were calculated by multiplying the predicted MOF rate to the total number of person-years in the corresponding age-and-sex-specific group.