TABLE 1.
Baseline characteristics of ovarian cancer patients by tertile of total phytosterols intake (N = 703).
| Characteristics | Tertiles of total phytosterols intake (mg/d)* |
P-value† | ||
| T1 | T2 | T3 | ||
| Range | < 43.10 | 43.10–61.55 | ≥ 61.55 | |
| No. of deaths/patients | 51/234 | 34/234 | 45/235 | 0.12 |
| Age at diagnosis (years), Median (IQR) | 53.00 (48.00–61.00) | 53.00 (47.00–60.00) | 53.00 (48.00–60.00) | 0.63 |
| Follow-up time (months), Median (IQR) | 27.35 (16.80–42.07) | 31.99 (20.37–46.80) | 35.43 (23.83–49.87) | < 0.05 |
| Body mass index (kg/m2), Median (IQR) | 23.30 (21.00–25.10) | 23.15 (20.60–25.20) | 23.10 (20.80–24.90) | 0.72 |
| Physical activity (MET/hours/day), Median (IQR) | 14.40 (7.00–22.30) | 13.65 (6.30–22.00) | 14.10 (6.10–22.40) | 0.90 |
| Ever cigarette smoking | 27 (11.54) | 17 (7.26) | 24 (10.21) | 0.28 |
| Ever alcohol drinking | 58 (24.79) | 50 (21.37) | 41 (17.45) | 0.15 |
| Ever dietary change | 59 (25.21) | 51 (21.79) | 58 (24.68) | 0.65 |
| Ever menopause | 167 (71.37) | 164 (70.09) | 177 (75.32) | 0.42 |
| Parity | 0.10 | |||
| ≤ 1 | 179 (76.50) | 167 (71.37) | 159 (67.66) | |
| ≥ 2 | 55 (23.50) | 67 (28.63) | 76 (32.34) | |
| Educational level | 0.62 | |||
| Junior secondary or below | 118 (50.43) | 127 (54.27) | 130 (55.32) | |
| Senior high school/technical secondary school | 57 (24.36) | 46 (19.66) | 44 (18.72) | |
| Junior college/university or above | 59 (25.21) | 61 (26.07) | 61 (25.96) | |
| Income per month (Yuan) | 0.39 | |||
| < 5,000 | 138 (58.97) | 150 (64.10) | 133 (56.60) | |
| 5,000 to < 10,000 | 70 (29.91) | 55 (23.50) | 69 (29.36) | |
| ≥ 10,000 | 26 (11.12) | 29 (12.40) | 33 (14.04) | |
| Mean (SD) total energy intake (kcal/d) | 1573.36 (581.90) | 1279.23 (476.07) | 1514.41 (552.23) | < 0.05 |
| Mean (SD) carbohydrate intake (g/d)* | 232.67 (25.53) | 225.19 (22.29) | 222.85 (27.81) | < 0.05 |
| Mean (SD) total fiber intake (g/d)* | 13.20 (3.34) | 17.05 (2.47) | 22.27 (4.49) | < 0.05 |
| Mean (SD) isoflavone intake (mg/d)* | 7.98 (7.89) | 15.82 (9.22) | 26.35 (15.93) | < 0.05 |
| Mean (SD) monounsaturated fatty acid intake (g/d)* | 8.85 (3.47) | 9.55 (2.57) | 9.45 (3.62) | < 0.05 |
| Mean (SD) polyunsaturated fatty acid intake (g/d)* | 4.12 (1.59) | 5.31 (1.49) | 6.45 (2.53) | < 0.05 |
IQR, interquartile; MET, metabolic equivalents of task; SD, standard deviation; T, tertile.
*Adjusted for energy by the residual method.
†P-values were determined with one-way ANOVA or Kruskal–Wallis test for continuous variables, and the chi-square test for categorical variables.
Values are numbers (percentages) unless stated otherwise.