Table 4.

Serum oestradiol and progesterone levels.

	Group 1: HRT(−)	Group 2: HRT(+)
Total patients (Eyes)	128 (128)	136 (136)
Baseline oestradiol (pg/ml)	8.7 ± 1.23	9.1 ± 1.52
*Year 5 oestradiol (pg/ml)	8.9 ± 1.36	17.5 ± 2.25
*Oestradiol Ratio (Year 5/baseline)	1.02	1.92
Baseline progesterone (pg/ml)	65.7 ± 10.76	68.3 ± 9.95
*Year 5 progesterone (pg/ml)	63.8 ± 9.58	98.6 ± 12.38
*Progesterone Ratio (Year 5/baseline)	0.97	1.44

Data represent mean ± standard deviation.

HRT(−): without hormone replacement therapy; HRT(+): with hormone replacement therapy.

*: p < .05.