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Table 2 Comparative analysis between the Psychosomatic Medicine and Psychiatry departments

From: Economic costs for outpatient treatment of eating disorders in Japan

 

Psychosomatic medicine

Psychiatry

P value

Age (years)

(N = 163)

(N = 65)

 

 Mean (SD)

29.59 (10.79)

29.22 (9.50)

0.81a

 Median (Range)

27 (11–55)

27 (13–47)

 

Sex, N (%)

(N = 188)

(N = 68)

 

 Female

162 (86.2)

61 (89.7)

0.037b

 Male

3 (1.6)

4 (5.9)

 

 Missing

23 (12.2)

3 (4.4)

 

Disease type, N (%)

(N = 188)

(N = 68)

 

 ANR

60 (31.9)

22 (32.4)

0.14b

 ANBP

51 (27.1)

21 (30.9)

 

 BN

36 (19.1)

16 (23.5)

 

 BED

1 (0.5)

2 (2.9)

 

 Other/missing

40 (21.3)

7 (10.3)

 

Disease duration (months)

(N = 147)

(N = 65)

 

 Mean (SD)

123.95 (105.97)

107.29 (92.00)

0.35c

 Median (Range)

92 (0–432)

84 (11–353)

 

Medical reimbursement points for an outpatient revisit

(N = 101)

(N = 51)

 

 Mean (SD)

462.55 (463.87)

476.56 (171.40)

< 0.001c

 Median (Range)

223 (113–2214)

471 (73–1021)

 

Clinical interview time (min)

(N = 102)

(N = 31)

 

 Mean (SD)

28.05 (8.82)

17.26 (10.07)

< 0.001c

 Median (range)

30 (10–60)

15 (5–45)

 

Reimbursement points per interview minute

(N = 101)

(N = 31)

 

 Mean (SD)

18.12 (18.75)

31.95 (11.57)

< 0.001c

 Median (range)

10.43 (2.55–95.53)

31.40 (11.28–61.20)

 

EDE-Q global score at baseline

(N = 126)

(N = 47)

 

 Mean (SD)

2.41 (1.44)

2.98 (1.37)

0.020a

 Median (range)

2.40 (0.00–5.21)

3.36 (0.22–5.09)

 

EDE-Q global score at 3 months

(N = 65)

(N = 25)

 

 Mean (SD)

1.93 (1.34)

2.43 (1.43)

0.12a

 Median (range)

1.85 (0.00–4.95)

2.52 (0.06–5.01)

 

Changes in EDE-Q global score

(N = 59)

(N = 23)

 

 Mean (SD)

− 0.27 (0.70)

− 0.33 (0.89)

0.73a

 Median (range)

− 0.12 (− 1.91 to 1.15)

− 0.02 (− 3.19 to 0.56)

 

BMI at baseline

(N = 90)

(N = 38)

 

 Mean (SD)

15.01 (1.90)

15.05 (2.36)

0.92a

 Median (range)

15.07 (10.54–18.38)

14.88 (9.21–18.44)

 

BMI at 3 months

(N = 43)

(N = 19)

 

 Mean (SD)

14.93 (1.83)

14.20 (1.89)

0.16a

 Median (range)

14.86 (10.62–18.67)

14.38 (9.33–17.33)

 

Changes in BMI

(N = 43)

(N = 19)

 

 Mean (SD)

0.06 (0.74)

− 0.01 (0.75)

0.76a

 Median (range)

0.00 (− 2.20 to 2.04)

0.00 (− 2.60 to 0.86)

 
  1. Each cell includes the number of comparative samples within parentheses. Medical reimbursement points are presented for a single outpatient revisit. Results for BMI are presented for patients who were underweight (BMI < 18.5) at the beginning of the study
  2. SD standard deviation, BMI body mass index, EDE-Q eating disorder examination questionnaire 6.0, ANR anorexia nervosa restricting type, ANBP anorexia nervosa binge-purging type, BN bulimia nervosa, BED binge eating disorders
  3. aStudent t test
  4. bFisher’s exact test
  5. cMann–Whitney U test