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Table 1 Patient demographics at time of AHP diagnosis and acute attacks during observation period

From: Clinical features of acute attacks, chronic symptoms, and long-term complications among patients with acute hepatic porphyria in Japan: a real-world claims database study

 

Overall AHP Population

Type

Matched Population

Acute Intermittent

Porphyria

Hereditary

Coproporphyria

Variegate

Porphyria

Patients, n

 

391

120

46

11

3910

Sex, n (%)

Male

177 (45.3)

43 (35.8)

27 (58.7)

6 (54.5)

1770 (45.3)

Female

214 (54.7)

77 (64.2)

19 (41.3)

5 (45.5)

2140 (54.7)

Age, years

Mean (SD)

44.4 (23.1)

42.6 (19.0)

34.4 (27.1)

56.1 (15.1)

44.8 (23.4)

Median

44.0

39.5

25.5

57.0

45.0

Min–max

0–94

11–94

0–88

31–73

0–98

Observation period

(first visit~last visit), months

Mean (SD)

35.2 (31.5)

33.0 (31.1)

36.1 (40.9)

41.1 (41.1)

38.3 (34.2)

Median

27.0

20.5

20.5

34.0

32.0

Q1–Q3

5.0–59.0

5.0–54.5

3.0–54.0

2.0–72.0

4.0–64.0

Min–max

1–145

1–135

1–145

1–126

1–147

Patients who had an acute attack that led to an ED visit or admission, n (%)

ED visit

24 (6.1)

15 (12.5)

0 (0.0)

0 (0.0)

ED admission

100 (25.6)

34 (28.3)

11 (23.9)

2 (18.2)

Patients who experienced an acute attack, n (%)

Total

112 (28.6)

44 (36.7)

11 (23.9)

2 (18.2)

1

71 (18.2)

23 (19.2)

10 (21.7)

2 (18.2)

≥ 2

41 (10.5)

21 (17.5)

1 (2.2)

0 (0.0)

Cumulative total

207

94

12

2

Mean (SD)

0.5 (1.2)

0.8 (1.6)

0.3 (0.5)

0.2 (0.4)

Min–max

0–11

0–11

0–2

0–1

Days to acute attack in patients with ≥ 2 acute attacks

n

95

50

1

0

Mean (SD)

281.3 (339.4)

317.2 (337.7)

21.0 (—)

Median

183.0

250.0

21.0

Q1–Q3

34.0–439.0

45.0–470.0

21.0–21.0

Min–max

1–1810

1–1499

21–21

  1. AHP, acute hepatic porphyria; ED, emergency department; max, maximum; min, minimum; Q, quintile; SD, standard deviation