Table 2 Baseline characteristics (predictors) of each latent class, with mean and standard deviation
Variable | Class1, n = 12 (high, stable) | Class2, n = 41 (high, moderate) | Class3, n = 20 (low, rapid) | Class4, n = 34 (medium, stable) | Group comparison |
|---|---|---|---|---|---|
Age (years) | 19.50 (1.45) | 19.22 (2.15) | 20.10 (2.08) | 20.15 (2.32) | F(3,103) = 1.46, p = 0.23 |
DUED (months) | 14.73 (9.19) | 16.98 (12.17) | 16.05 (9.01) | 16.88 (10.83) | F(3,101) = 0.15, p = 0.93 |
Baseline BMI | 17.91 (0.66) 1 | 17.66 (0.97) 1 | 14.74 (0.65) 2 | 16.23 (0.72) 3 | F(3,87) = 3.44, p = 0.02 a |
Ethnicity, n (%) |  |  |  |  | X2 (3) = 4.57, p = 0.21 |
 White | 9/11 (81.8%) | 28/36 (77.8%) | 17/19 (89.5%) | 22/32 (68.8%) |  |
 BAME | 2/11 (18.2%) | 8/36 (22.2%) | 2/19 (10.5%) | 10/32 (31.3%) |  |
Occupation, n (%) |  |  |  |  | X2 (6) = 3.64, p = 0.74 |
 Student | 10/12 (83.3%) | 28/41 (68.3%) | 12/20 (60.0%) | 21/34 (61.8%) |  |
 Employed | 1/12 (8.3%) | 7/41 (17.1%) | 6/20 (30.0%) | 7/34 (20.6%) |  |
 Unemployed | 1/12 (8.3%) | 6/41 (14.6%) | 2/20 (10.0%) | 6/34 (17.6%) |  |
Home, n (%) |  |  |  |  | X2 (3) = 6.84, p = 0.08 |
 With family | 3/10 (30.0%) | 29/40 (72.5%) | 10/19 (52.6%) | 21/34 (61.8%) |  |
 Other | 7/10 (70.0%) | 11/40 (27.5%) | 9/19 (47.4%) | 13/34 (38.2%) |  |
EDE-Q | 4.42 (1.21) | 3.95 (1.25) | 3.62 (1.28) | 3.33 (1.57) | F(3,103) = 2.39, p = 0.07 |
Binge | 6/12 (50.0%) | 21/41 (51.2%) | 9/20 (45.0%) | 9/34 (26.5%) | X2 (3) = 5.18, p = 0.16 |
Purge | 3/12 (25.0%) | 15/41 (36.6%) 1 | 1/20 (5.0%) 2 | 5/34 (14.7%) | Fisher’s exact = 9.23, p = 0.02 a |
Laxative | 2/12 (16.7%) | 9/41 (22.0%) | 3/20 (15.0%) | 1/34 (2.9%) | Fisher’s exact = 6.26, p = 0.08 |
DASS - 21 | 32.83 (14.06) | 35.17 (14.04) | 27.45 (9.90) | 33.50 (14.62) | F(3, 103) = 1.48, p = 0.23 |
 Depression | 11.92 (4.98) | 13.02 (5.61) 1 | 8.80 (4.51) 2 | 11.24 (5.56) | F(3, 103) = 2.86, p = 0.04 a |
 Anxiety | 8.42 (4.70) | 9.49 (5.71) | 5.90 (4.04) | 9.24 (5.38) | F(3,103) = 2.35, p = 0.08 |
 Stress | 12.50 (5.90) | 12.66 (4.54) | 12.75 (4.46) | 13.03 (5.18) | F(3,103) = 0.05, p = 0.99 |
CIA | 34.83 (8.6) | 32.20 (10.86) | 32.20 (9.68) | 29.76 (11.03) | F(3,103) = 0.79, p = 0.50 |
LEE | 13.58 (13.91) | 18.26 (11.99) | 15.1 (11.52) | 11.97 (8.45) | F(3, 103) = 2.08, p = 0.53 |
 Intrusiveness | 4.92 (3.73) | 5.80 (3.88) | 4.95 (3.62) | 4.64 (2.74) | F(3, 102) = 0.74, p = 0.53 |
 Emotional response | 2.58 (4.14) | 4.50 (3.60) | 3.95 (3.89) | 2.74 (3.51) | F(3, 102) = 1.77, p = 0.16 |
 Attitude toward illness | 2.58 (2.61) | 3.50 (2.72) | 2.60 (2.52) | 2.09 (1.48) | F(3, 102) = 2.32, p = 0.08 |
 Tolerance/expectations | 3.50 (4.08) | 4.93 (3.77) 1 | 3.60 (3.56) | 2.50 (2.54) 2 | F(3, 102) = 3.12, p = 0.03 a |