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Table 4 Diagnostic delays in the five most frequent rare disease groups in our sample

From: Australian children living with rare diseases: experiences of diagnosis and perceived consequences of diagnostic delays

 

Na

Perceived Delay

N (%)

No Perceived Delay

N (%)

Statistics

Age Groups

 0–4

126

52 (41.3)

74 (58.7)

Chi-sq = 0.53, P = 0.77

 5–12

135

60 (44.4)

75 (55.6)

 13–18

98

45 (45.9)

53 (54.1)

IRSAD

 Relatively disadvantaged (1st–5th decile)

139

58 (42.0)

81 (58.0)

Chi-sq = 0.37, P = 0.54

 Relatively advantaged (6th–10th decile)

220

99 (45.0)

121 (55.0)

 

ARIA

 Major Australian City

217

90 (41.5)

127 (58.5)

Chi-sq = 0, P = 1

 Regional or remote Australia

65

27 (41.5)

38 (58.5)

Diagnoses

 Inborn Errors of Metabolism

152

46 (30.3)

106 (69.7)

Chi-sq = 17.1, P < 0.0001

 Four other common diagnostic groups combined

130

71 (54.6)

59 (45.4)

 Genetic Syndromes

50

23 (46.0)

27 (44.0)

 

 Chromosomal disorders

43

25 (58.1)

18 (41.9)

 

 Congenital malformation Syndromes

20

11 (55.0)

9 (45.0)

 

 Neuromuscular disorders

17

12 (70.6)

5 (29.4

 
  1. aOf the 462 families, 359 gave a definitive answer about delayed diagnosis; the rest either did not answer or ticked “don’t know”