Estimates (overall and stratified on age at baseline) for the association between daily nutrient intake and age at natural menopause (years)
| Daily nutrient intake | Age at baseline | ≤50 years | >50 years | |||||||||
| Estimate* | 99% CI | P values | Estimate† | 99% CI | P values | Estimate‡ | 99% CI | P values | Estimate§ | 99% CI | P values | |
| Fibre (g) | 0.0 | −0.0 to 0.1 | 0.111 | −0.0 | −0.1 to 0.0 | 0.087 | 0.0 | −0.0 to 0.1 | 0.161 | 0.0 | −0.0 to 0.0 | 0.641 |
| % energy from fats | 0.0 | −0.1 to 0.0 | 0.140 | −0.1 | −0.4 to 0.1 | 0.144 | −0.2 | −0.4 to 0.0 | 0.010 | −0.1 | −0.4 to 0.2 | 0.356 |
| % energy from proteins | 0.1 | 0.0 to 0.2 | 0.005 | −0.0 | −0.3 to 0.2 | 0.713 | −0.3 | −0.5 to 0.0 | 0.011 | −0.0 | −0.3 to 0.3 | 0.995 |
| % energy from carbohydrates | 0.0 | −0.0 to 0.1 | 0.416 | −0.1 | −0.3 to 0.1 | 0.227 | −0.2 | −0.4 to −0.0 | 0.009 | −0.1 | −0.3 to 0.2 | 0.508 |
| % energy from saturated fats | −0.1 | −0.2 to 0.0 | 0.094 | −0.1 | −0.2 to 0.1 | 0.171 | −0.1 | −0.3 to 0.1 | 0.155 | −0.0 | −0.2 to 0.1 | 0.443 |
| % energy from polyunsaturated fats | −0.1 | −0.2 to 0.1 | 0.243 | −0.0 | −0.2 to 0.2 | 0.941 | 0.1 | −0.2 to 0.3 | 0.485 | 0.0 | −0.2 to 0.2 | 0.936 |
| % energy from monounsaturated fats | 0.0 | −0.2 to 0.1 | 0.324 | −0.1 | −0.2 to 0.4 | 0.488 | 0.0 | −0.3 to 0.4 | 0.795 | 0.0 | −0.3 to 0.3 | 0.855 |
| Vitamin C (mg) | 0.0 | 0.0 to 0.1 | 0.010 | 0.0 | −0.0 to 0.1 | 0.031 | 0.0 | −0.0 to 0.1 | 0.329 | 0.0 | −0.0 to 0.1 | 0.585 |
| Vitamin B1 (mg) | 0.0 | −0.2 to 0.1 | 0.271 | −0.1 | −0.2 to 0.0 | 0.110 | −0.0 | −0.2 to 0.1 | 0.396 | −0.1 | −0.2 to 0.0 | 0.130 |
| Vitamin B2 (mg) | 0.3 | −0.1 to 0.6 | 0.060 | 0.3 | −0.2 to 0.9 | 0.105 | −0.2 | −0.9 to 0.4 | 0.306 | 0.0 | −0.5 to 0.5 | 0.987 |
| Vitamin B6 (mg) | 0.4 | −0.0 to 0.7 | 0.014 | 0.6 | 0.1 to 1.2 | 0.005 | 0.0 | −0.6 to 0.7 | 0.900 | 0.2 | −0.4 to 0.8 | 0.508 |
| Vitamin B12 (µg) | 0.0 | −0.0 to 0.0 | 0.198 | 0.0 | −0.0 to 0.0 | 0.440 | 0.0 | −0.0 to 0.0 | 0.848 | 0.0 | −0.0 to 0.0 | 0.536 |
| Folate (µg) | 0.1 | −0.0 to 0.2 | 0.038 | 0.2 | −0.0 to 0.3 | 0.029 | 0.0 | −0.2 to 0.2 | 0.805 | 0.1 | −0.1 to 0.2 | 0.408 |
| Vitamin D (µg) | 0.4 | −0.0 to 0.7 | 0.011 | 0.4 | −0.0 to 0.8 | 0.017 | 0.2 | −0.3 to 0.7 | 0.281 | 0.1 | −0.3 to 0.5 | 0.519 |
| Vitamin A (µg) | 0.1 | 0.0 to 0.2 | 0.008 | 0.1 | −0.0 to 0.2 | 0.020 | 0.0 | −0.1 to 0.1 | 0.795 | 0.0 | −0.1 to 0.1 | 0.675 |
| Vitamin E (mg) | 0.0 | −0.1 to 0.1 | 0.516 | −0.1 | −0.1 to 0.0 | 0.145 | 0.0 | −0.1 to 0.1 | 0.377 | −0.0 | −0.1 to 0.1 | 0.391 |
| Calcium (mg) | 0.0 | −0.1 to 0.2 | 0.564 | −0.0 | −0.2 to 0.2 | 0.791 | −0.2 | −0.5 to 0.1 | 0.042 | −0.1 | −0.3 to 0.1 | 0.423 |
| Iron (mg) | 0.1 | −0.0 to 0.2 | 0.085 | 0.1 | −0.0 to 0.2 | 0.044 | 0.1 | −0.1 to 0.2 | 0.244 | 0.0 | −0.1 to 0.1 | 0.705 |
| Zinc (mg) | 0.2 | −0.0 to 0.3 | 0.012 | 0.3 | −0.0 to 0.6 | 0.007 | −0.0 | −0.4 to 0.3 | 0.725 | 0.2 | −0.1 to 0.5 | 0.081 |
*Difference in age at natural menopause, unadjusted model (n=910).
†Difference in age at natural menopause, model adjusted for the following factors: physical activity level, alcohol consumption, smoking, social class, total energy intake (n=838).
‡Difference in age at natural menopause for those aged 50 years or below in the fully adjusted model (n=477).
§Difference in age at natural menopause for those aged above 50 years in the fully adjusted model (n=361).