Table 3. Dietary characteristics of women according to age at natural menopause.
| Characteristics | Age at natural menopause (years) | Ptrend | ||||
|---|---|---|---|---|---|---|
| ≤40 | 41–44 | 45–49 | 50–52 | ≥ 53 | ||
| Number of women N (%) | 581(3.40) | 1152 (6.75) | 7559 (44.27) | 5432 (31.81) | 2352 (13.77) | |
| Meat N (%) | <0.001 | |||||
| <1 day per week | 99(17.04) | 172(14.93) | 961(12.71) | 684(12.59) | 261(11.10) | |
| 1–3 days per week | 275(47.33) | 553(48.00) | 3721(49.23) | 2507(46.15) | 1156(49.15) | |
| ≥4 days per week | 207(35.63) | 427(37.07) | 2877(38.06) | 2241(41.26) | 935(39.75) | |
| Sea food N (%) | 0.01 | |||||
| <1 day per week | 371(63.86) | 726(63.02) | 4655(61.58) | 3113(57.31) | 1370(58.25) | |
| 1–3 days per week | 199(34.25) | 394(34.20) | 2726(36.06) | 2187(40.26) | 932(39.63) | |
| ≥4 days per week | 11(1.89) | 32(2.78) | 178(2.36) | 132(2.43) | 50(2.12) | |
| Fresh eggs N (%) | 0.03 | |||||
| <1 day per week | 232(39.93) | 504(43.75) | 3100(41.01) | 2079(38.27) | 958(40.73) | |
| 1–3 days per week | 316(54.39) | 570(49.48) | 3983(52.69) | 2882(53.06) | 1231(52.34) | |
| ≥4 days per week | 33(5.68) | 78(6.77) | 476(6.30) | 471(8.67) | 163(6.93) | |
| Soybean products N (%) | 0.17 | |||||
| <1 day per week | 99(17.04) | 190(16.49) | 1127(14.91) | 746(13.73) | 338(14.37) | |
| 1–3 days per week | 338(58.18) | 696(60.42) | 4712(62.34) | 3345(61.58) | 1469(62.46) | |
| ≥4 days per week | 144(24.78) | 266(23.09) | 1720(22.75) | 1341(24.69) | 545(23.17) | |
| Fresh fruits N (%) | <0.001 | |||||
| <1 day per week | 359(61.79) | 645(55.99) | 3768(49.85) | 2538(46.72) | 1140(48.47) | |
| 1–3 days per week | 165(28.40) | 350(30.38) | 2690(35.59) | 2041(37.57) | 837(35.59) | |
| ≥4 days per week | 57(9.81) | 157(13.63) | 1101(14.56) | 853(15.71) | 375(15.94) | |
| Dairy products N (%) | 0.09 | |||||
| <1 day per week | 575(98.97) | 1127(97.83) | 7390(97.76) | 5304(97.64) | 2299(97.75) | |
| 1–3 days per week | 2(0.34) | 17(1.48) | 79(1.05) | 58(1.07) | 24(1.02) | |
| ≥4 days per week | 4(0.69) | 8(0.69) | 90(1.19) | 70(1.29) | 29(1.23) | |
| Vitamins intake N (%) | 0.26 | |||||
| Yes | 24(4.13) | 105(9.11) | 590(7.81) | 457(8.41) | 215(9.14) | |
| No | 557(95.87) | 1047(90.89) | 6969(92.19) | 4975(91.59) | 2137(90.86) | |
| Minerals intake N (%) | 0.07 | |||||
| Yes | 19(3.27) | 54(4.69) | 393(5.20) | 280(5.15) | 126(5.36) | |
| No | 562(96.73) | 1098(95.31) | 7166(94.80) | 5152(94.85) | 2226(94.64) | |
| Experienced severe food shortage N (%) | 0.34 | |||||
| Yes | 401(69.02) | 763(66.23) | 4954(65.54) | 3790(69.77) | 1733(73.68) | |
| No | 180(30.98) | 389(33.77) | 2605(34.46) | 1642(30.23) | 619(26.32) | |
Differences between the two menopausal age groups (≤ 44 years and ≥45 years) were compared using linear-by-linear association chi-square test.