Factors predicting age at menopause among Iranian women in the Bandare-Kong cohort study (a cross-sectional survey of PERSIAN cohort study)

Kutenaee, Maryam Azizi; Dashti, Sareh; Rafati, Shideh; Moannaei, Mehrsa; Masoudi, Mojtaba; Nejatizadeh, Abdolazim; Shahmoradi, Mehdi; Roozbeh, Nasibeh

doi:10.1186/s40695-023-00088-z

Table 2 Mean menopausal age based on categorical variables

From: Factors predicting age at menopause among Iranian women in the Bandare-Kong cohort study (a cross-sectional survey of PERSIAN cohort study)

Variable		Total (n = 894)		Premature menopause age (n = 79)		Early menopause age (n = 116)		Normal menopause age (n = 699)
Variable		Mean ± SD	P	Mean ± SD	P	Mean ± SD	P	Mean ± SD	P
Education (years)	< 6(y/o)	48.41 ± 6.36	0.251	34.25 ± 3.64	0.979	41.96 ± 1.55	0.592	51.01 ± 3.77	0.270
	6–12(y/o)	47.19 ± 6.15		34.29 ± 2.69		42.17 ± 1.47		50.12 ± 2.65
	> 12(y/o)	46.69 ± 5.49		35.00 ± 0.00		42.75 ± 1.89		50.13 ± 2.90
Gravida (number)^*	< 7	47.41 ± 6.32	< 0.001	33.79 ± 4.04	0.209	42.17 ± 1.47	0.186	50.36 ± 3.39	< 0.001
Gravida (number)^*	≥ 7	49.19 ± 6.20	< 0.001	34.82 ± 2.81	0.209	41.78 ± 1.65	0.186	51.46 ± 3.88	< 0.001
Marital status	Single	48.50 ± 5.66	0.722	34.10 ± 3.20	0.639	41.71 ± 1.45	0.701	51.67 ± 3.66	0.423
	Married	48.39 ± 6.21		34.16 ± 3.19		42.07 ± 1.55		50.87 ± 3.64
	Widow/Divorce	47.93 ± 7.08		34.61 ± 4.58		41.81 ± 1.66		51.28 ± 4.06
Socioeconomic status	Poor	48.89 ± 6.46	0.060	34.23 ± 4.06	0.987	42.07 ± 1.57	0.530	51.40 ± 3.80	0.051
	Moderate	48.19 ± 6.25		34.40 ± 2.75		41.70 ± 1.59		50.96 ± 3.60
	Rich	47.76 ± 6.24		34.24 ± 3.42		42.10 ± 1.53		50.46 ± 3.59
Job	No	48.37 ± 6.41	0.516	34.20 ± 3.62	0.680	41.92 ± 1.55	0.167	51.03 ± 3.72	0.132
Job	Yes	47.96 ± 5.92	0.516	34.70 ± 2.87	0.680	42.50 ± 1.55	0.167	50.40 ± 3.59	0.132
Thyroid disease	No	48.43 ± 6.33	0.161	34.22 ± 3.37	0.808	41.95 ± 1.53	0.389	51.01 ± 3.78	0.243
Thyroid disease	Yes	47.58 ± 6.39	0.161	34.47 ± 4.26	0.808	42.31 ± 1.70	0.389	50.54 ± 3.20	0.243
Diabetes	No	48.27 ± 6.43	0.684	33.82 ± 3.06	0.043	41.95 ± 1.57	0.588	50.93 ± 3.69	0.803
Diabetes	Yes	48.47 ± 6.08	0.684	35.68 ± 2.93	0.043	42.13 ± 1.53	0.588	51.01 ± 3.79	0.803
Cardiac Disease	No	48.30 ± 6.34	0.830	34.37 ± 3.56	0.461	41.99 ± 1.55	0.880	50.93 ± 3.66	0.727
Cardiac Disease	Yes	48.42 ± 6.36	0.830	33.44 ± 3.28	0.461	42.05 ± 1.62	0.880	51.07 ± 3.98	0.727
CVD history	No	48.28 ± 6.37	0.724	34.37 ± 3.56	0.461	41.97 ± 1.55	0.660	50.94 ± 3.67	0.853
CVD history	Yes	48.48 ± 6.20	0.724	33.44 ± 3.28	0.461	42.13 ± 1.60	0.660	51.01 ± 3.91	0.853
Body mass index (kg/m2)	< 25	48.47 ± 6.84	0.707	34.41 ± 3.89	0.641	42.35 ± 1.45	0.186	51.41 ± 4.01	0.110
	25–30	48.40 ± 6.02		34.61 ± 2.51		42.02 ± 1.58		50.86 ± 3.66
	> 30	48.05 ± 6.31		33.71 ± 4.14		41.65 ± 1.57		50.67 ± 3.46
Smoking	No	48.28 ± 6.31	0.696	33.97 ± 3.57	0.108	42.04 ± 1.55	0.479	50.91 ± 3.62	0.469
Smoking	Yes	48.51 ± 6.58	0.696	35.61 ± 3.05	0.108	41.73 ± 1.62	0.479	51.19 ± 4.21	0.469
Stillbirth	No	48.49 ± 5.90	0.801	34.98 ± 2.81	0.298	42.05 ± 1.58	0.480	50.85 ± 3.65	0.067
Stillbirth	Yes	48.36 ± 7.21	0.801	34.23 ± 2.79	0.298	41.75 ± 1.61	0.480	51.52 ± 4.06	0.067
Infertility	No	48.45 ± 6.11	0.051	34.84 ± 2.83	< 0.001	42.00 ± 1.58	1.000	50.94 ± 3.71	0.306
Infertility	Yes	46.56 ± 9.51	0.051	29.13 ± 5.22	< 0.001	42.00 ± 1.23	1.000	51.61 ± 3.72	0.306
Tubal ligation	No	48.31 ± 6.60	0.948	33.82 ± 3.62	0.073	42.02 ± 1.58	0.782	51.15 ± 3.82	0.030
Tubal ligation	Yes	48.34 ± 5.70	0.948	35.41 ± 3.07	0.073	41.93 ± 1.51	0.782	50.49 ± 3.40	0.030

*The mean of gravida was 6.8 and its median was 7. Independent t-test was used to compare mean age at menopause between two groups; The ANOVA test was used to compare the mean age at menopause in more than two groups. SD: Standard deviation, CVD: Cardiovascular disease

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ISSN: 2054-2690

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