Table 2.
Chronologic change in plant-based diet (PBD) score
| Timeframe | n | Follow-up (mo) | PBD score+ | p value | PBD score− | p value | PBD score (sum) | p value | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean (SD) | Median (IQR) | Mean (SD) | Median (IQR) | Mean (SD) | Median (IQR) | Mean (SD) | Median (IQR) | |||||
| Baseline | 88 | — | — | 23.2 (8.1) | 24.0 (17.0–28.8) | 11.9 (6.2) | 12.0 (8.0–16.8) | 10.9 (9.3) | 12.0 (4.0–17.0) | |||
| Follow-upa | ||||||||||||
| Short term | 41 | 14.8 (7.6) | 12.0 (10.5–24.0) | 33.0 (5.6) | 33.0 (28.0–38.0) | < 0.0001b | 3.7 (3.8) | 3.0 (0.5–6.0) | < 0.0001b | 29.3 (7.6) | 31.0 (24.0–36.0) | < 0.0001b |
| Baseline | 41 | 23.9 (7.6) | 26.0 (17.5–29.0) | 11.9 (5.2) | 12.0 (9.0–16.5) | 12.0 (8.7) | 12.0 (0–15.0) | |||||
| Long term | 41 | 80.4 (36.6) | 76.5 (43.8–110.8) | 26.9 (7.6) | 26.0 (21.0–33.5) | 0.0171b | 7.5 (4.9) | 7.0 (3.5–10.0) | < 0.0001b | 19.4 (9.0) | 20.0 (12.5–25.5) | < 0.0001b |
| Baseline | 41 | 24.7 (7.0) | 25.0 (21.0–28.5) | 13.0 (5.2) | 12.0 (9.0–17.0) | 11.7 (8.8) | 13.0 (6.0–17.0) | |||||
a
Patients with short-term PBD score (n = 41) and those with long-term PBD score (n = 41) were different: 24 patients overlap.
b
p value obtained with paired t-test or Wilcoxon test.
IQR = interquartile range; SD = standard deviation.