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Table 2 Characteristics of the survey response groups for Survey-2

From: Survey on patients with undiagnosed diseases in Japan: potential patient numbers benefiting from Japan’s initiative on rare and undiagnosed diseases (IRUD)

Survey-2 National/public university hospitals
(NUH)
Private university hospitals (main)
(PUH-main)
Private university hospitals (branch)
(PUH-branch)
Pediatrics/pediatric surgery Others Pediatrics/pediatric surgery Others Pediatrics/pediatric surgery Others
No. of doctors who completed the survey 75   280   40   245   33   166  
Sex
 Male 63 84.0% 257 91.8% 31 77.5% 215 87.8% 28 84.8% 149 89.8%
 Female 12 16.0% 23 8.2% 9 22.5% 30 12.2% 5 15.2% 17 10.2%
Age
 20s 0 0.0% 0 0.0% 0 0.0% 0 0.0% 0 0.0% 0 0.0%
 30s 23 30.7% 62 22.1% 7 17.5% 59 24.1% 6 18.2% 26 15.7%
 40s 39 52.0% 162 57.9% 18 45.0% 114 46.5% 12 36.4% 70 42.2%
 50s 10 13.3% 53 18.9% 10 25.0% 57 23.3% 13 39.4% 57 34.3%
 60+ 3 4.0% 3 1.1% 5 12.5% 15 6.1% 2 6.1% 13 7.8%
Years since obtaining medical license
 Under 10 years 0 0.0% 4 1.4% 1 2.5% 12 4.9% 1 3.0% 5 3.0%
 10–14 27 36.0% 61 21.8% 3 7.5% 56 22.9% 6 18.2% 31 18.7%
 15–19 24 32.0% 105 37.5% 13 32.5% 59 24.1% 7 21.2% 35 21.1%
 20–24 16 21.3% 63 22.5% 11 27.5% 52 21.2% 5 15.2% 33 19.9%
 25–29 3 4.0% 27 9.6% 5 12.5% 28 11.4% 3 9.1% 34 20.5%
 30+ 5 6.7% 20 7.1% 7 17.5% 38 15.5% 11 33.3% 28 16.9%
No. of outpatients in the past month
 Under 100 cases 38 50.7% 86 30.7% 13 32.5% 61 24.9% 5 15.2% 23 13.9%
 100–199 cases 29 38.7% 110 39.3% 15 37.5% 75 30.6% 9 27.3% 52 31.3%
 200–299 cases 8 10.7% 51 18.2% 9 22.5% 67 27.3% 11 33.3% 37 22.3%
 300–399 cases 0 0.0% 19 6.8% 2 5.0% 20 8.2% 5 15.2% 22 13.3%
 400–599 cases 0 0.0% 9 3.2% 1 2.5% 19 7.8% 2 6.1% 19 11.4%
 600–799 cases 0 0.0% 2 0.7% 0 0.0% 3 1.2% 1 3.0% 10 6.0%
 800–999 cases 0 0.0% 1 0.4% 0 0.0% 0 0.0% 0 0.0% 1 0.6%
 1000+ cases 0 0.0% 2 0.7% 0 0.0% 0 0.0% 0 0.0% 2 1.2%
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