Cross-sectional analysis of association between socioeconomic status and utilization of primary total hip joint replacements 2006–7: Australian Orthopaedic Association National Joint Replacement Registry

Table 1 CRUDE numbers and rates per 1,000py of total hip replacements (thr) by age, gender and socioeconomic quintiles for 2006–7

		Total			Quintile 1			Quintile 2			Quintile 3			Quintile 4			Quintile 5
Age (yrs)	At risk	n= THR^a	Rate	At risk	n	Rate	At risk	n	Rate	At risk	n	Rate	At risk	n	Rate	At risk	n	Rate
Males
20-29	14,727	-	-	3167	-	-	2998	-	-	3071	-	-	3120	-	-	2371	-	-
30-39	16,624	3	0.1	3173	-	-	3149	-	-	3638	-	-	3746	3	0.4	2918	-	-
40-49	18,192	29	0.8	3315	2	0.3	3155	5	0.8	3922	3	0.4	4011	6	0.7	3789	7	0.9
50-59	17,020	56	1.6	2992	37	6.2	3012	6	1.0	3758	13	1.7	3572	11	1.5	2686	17	2.3
60-69	11,767	115	4.9	2262	20	4.4	2354	28	5.9	295	14	2.9	2410	27	5.6	2346	17	3.6
70-79	8,383	102	6.1	1855	20	5.4	1864	24	6.4	1682	14	4.2	1644	19	5.8	1338	17	6.4
>79	4,361	36	4.1	876	4	2.3	1009	8	4.0	1004	9	4.5	816	4	2.5	656	8	6.1
Females
20-29	14,498	-	-	3300	-	-	2975	-	-	2984	-	-	2914	-	-	2325	-	-
30-39	17,599	2	0.06	3417	-	-	3274	2	0.3	3817	-	-	3834	-	-	3257	-	-
40-49	19,367	10	0.3	3509	3	0.4	3388	-	-	4169	1	0.1	4140	2	0.2	4161	3	0.4
50-59	17,653	54	1.5	3242	13	2.0	3235	9	1.4	3836	5	0.7	3666	11	1.5	3674	10	1.4
60-69	12,435	85	3.4	2552	14	2.7	2506	9	1.8	2596	19	3.7	2499	14	2.8	2282	24	5.3
70-79	9,872	107	5.4	2230	20	4.5	2248	25	5.6	2104	19	4.5	1808	19	5.3	1482	18	6.1
>79	7,320	43	2.9	1480	9	3.0	1711	10	2.9	1698	7	2.1	1399	9	3.2	1032	8	3.9

^a n = Total hip replacement (THR) in the Total Column includes Primary THR where SEIFA values were unavailable.
*Most disadvantaged quintile of SES. Rate = THR per 1,000 person years. At risk = population at risk.

ISSN: 1471-2474