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Table 2 Distribution of subjects between metropolitan and nonmetropolitan municipalities

From: Education policies to increase rural physicians in Japan: a nationwide cohort study

Category

Metroa

Non metrob

Total

% of nonmetro

P value

RRc of nonmetro

95% CI

PGY-1

       

 All graduates

5077

3634

8711

41.7

Reference

1.000

NA–NA

 Scholarship alone

36

76

112

67.9

 < 0.001

1.627

1.429–1.852

 Quota alone

68

40

108

37.0

 > 0.99

0.888

0.693–1.137

 Quota with scholarship

108

137

245

55.9

 < 0.001

1.340

1.196–1.502

 Jichi

69

58

127

45.7

 > 0.99

1.095

0.904–1.326

PGY-2

       

 All graduates

4938

3271

8209

39.8

reference

1.000

NA–NA

 Scholarship alone

63

67

130

51.5

0.036

1.293

1.093–1.531

 Quota alone

75

53

128

41.4

 > 0.99

1.039

0.844–1.279

 Quota with scholarship

94

91

185

49.2

0.051

1.234

1.064–1.433

 Jichi

55

46

101

45.5

 > 0.99

1.143

0.922–1.417

PGY-3

       

 All graduates

5233

2962

8195

36.1

Reference

1.000

NA–NA

 Scholarship alone

53

61

114

53.5

 < 0.001

1.480

1.245–1.761

 Quota alone

56

39

95

41.1

 > 0.99

1.136

0.891–1.448

 Quota with scholarship

75

106

181

58.6

 < 0.001

1.620

1.429–1.838

 Jichi

19

95

114

83.3%

 < 0.001

2.306

2.114–2.515

PGY-4

       

 All graduates

4559

3247

7806

41.6

Reference

1.000

NA–NA

 Scholarship alone

48

84

132

63.6%

 < 0.001

1.530

1.341–1.745

 Quota alone

57

46

103

44.7%

 > 0.99

1.074

0.865–1.333

 Quota with scholarship

44

92

136

67.6%

 < 0.001

1.626

1.444–1.832

 Jichi

4

107

111

96.4%

 < 0.001

2.317

2.216–2.423

PGY-5

       

 All graduates

4171

3201

7372

43.4%

Reference

1.000

NA–NA

 Scholarship alone

41

66

107

61.7%

 < 0.001

1.421

1.221–1.653

 Quota alone

27

22

49

44.9%

 > 0.99

1.034

0.757–1.412

 Quota with scholarship

28

42

70

60.0%

0.031

1.382

1.139–1.676

 Jichi

12

94

106

88.7%

 < 0.001

2.042

1.899–2.197

Total

       

 All graduates

23,978

16,315

40,293

40.5%

Reference

1.000

NA–NA

 Scholarship alone

241

354

595

59.5%

 < 0.001

1.469

1.374–1.572

 Quota alone

283

200

483

41.4%

 > 0.99

1.023

0.919–1.138

 Quota with scholarship

349

468

817

57.3%

 < 0.001

1.415

1.332–1.503

 Jichi

159

400

559

71.6%

 < 0.001

1.767

1.675–1.865

  1. PGY postgraduate year; RR relative risk; CI confidence interval; Jichi Jichi Medical University
  2. aMetropolis: wards of the ordinance-designated cities, special wards of Tokyo, and center cities
  3. bNonmetropolis: other cities and towns/villages
  4. cRelative risk of nonmetropolis against metropolis with "all graduates" being the reference group
  5. P value was calculated with Chi-square test with Bonferroni adjustment