Table 3

Association (odds ratio and 95% confidence intervals) between current use of HRT and level of biological variables by hysterectomy status in Busselton and Perth women combined after adjustment for age group and place of residence

	No hysterectomy		Hysterectomy
Description of biological variables	OR	95% CI	OR	95% CI	p Value for interaction with hysterectomy status*
*p Value for the likelihood ratio test of the interaction term.
Systolic blood pressure (mm Hg)
≤111	1		1
112–123	1.28	0.85 to 1.93	0.75	0.44 to 1.27
124–139	1.17	0.77 to 1.77	0.76	0.45 to 1.28
139+	0.76	0.48 to 1.21	0.63	0.37 to 1.10	0.021
Diastolic blood pressure (mm Hg)
≤69	1		1
70–75	1.04	0.70 to 1.56	1.26	0.76 to 2.08
76–82	1.22	0.83 to 1.79	0.84	0.52 to 1.35
83+	0.79	0.52 to 1.19	0.93	0.58 to 1.51	0.127
Waist/hip ratio
≤0.74	1		1
0.75–0.78	1.00	0.69 to 1.46	1.04	0.63 to 1.72
0.79–0.83	0.82	0.56 to 1.19	0.91	0.57 to 1.46
0.84+	0.72	0.48 to 1.08	0.59	0.36 to 0.97	0.427
Body mass index (kg/m²)
≤22.58	1		1
22.59–25.10	0.81	0.56 to 1.17	0.88	0.54 to 1.45
25.11–28.56	0.52	0.35 to 0.76	0.77	0.47 to 1.24
28.57+	0.49	0.33 to 0.72	0.61	0.38 to 0.98	0.818
Total cholesterol (mmol/l)
≤4.95	1		1
4.96–5.64	0.88	0.58 to 1.31	0.72	0.43 to 1.22
5.65–6.41	0.75	0.50 to 1.13	0.83	0.49 to 1.38
6.42+	0.45	0.29 to 0.70	0.97	0.58 to 1.63	0.090
HDL cholesterol (mmol/l)
≤1.25	1		1
1.26–1.50	1.03	0.71 to 1.50	1.28	0.78 to 2.11
1.51–1.80	1.02	0.69 to 1.50	1.69	1.05 to 2.73
1.81+	1.05	0.72 to 1.54	4.12	2.60 to 6.54	<0.001
LDL cholesterol (mmol/l)
≤2.93	1		1
2.94–3.50	0.81	0.54 to 1.21	0.89	0.54 to 1.47
3.51–4.20	0.72	0.48 to 1.06	0.62	0.38 to 1.00
4.21+	0.47	0.31 to 0.71	0.52	0.32 to 0.85	0.347
Triglycerides (mmol/l)
≤0.70	1		1
0.71–1.00	1.61	1.06 to 2.46	1.47	0.85 to 2.55
1.01–1.50	1.56	1.01 to 2.41	1.50	0.87 to 2.58
1.51+	1.13	0.72 to 1.77	1.69	1.00 to 2.85	0.414
Total/HDL cholesterol ratio
≤3.00	1		1
3.01–3.67	0.89	0.60 to 1.30	0.72	0.44 to 1.16
3.68–4.65	0.77	0.52 to 1.14	0.54	0.33 to 0.88
4.66+	0.71	0.48 to 1.04	0.29	0.18 to 0.47	0.001