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Table 1 Western Australia CT scan numbers and crude rates by sex and age group across the study period

From: Cohort study of Western Australia computed tomography utilisation patterns and their policy implications

 

2006/07

2007/08

2008/09

2009/10

2010/11

2011/12

Total

 

n

Rate*

n

Rate*

n

Rate*

n

Rate*

n

Rate*

n

Rate*

n

Rate*

Sex

              

Female

101,517

130.2

106,328

132.5

112,124

135.2

112,083

130.8

113,345

129.0

128,893

142.7

674,290

133.5

Male

93,353

119.4

97,791

121.5

104,716

125.7

105,192

122.0

107,625

121.9

120,764

133.3

629,441

124.1

Total

194,870

124.8

204,119

127.0

216,840

130.5

217,275

126.4

220,970

125.4

249,657

138.0

1,303,731

128.8

Age group

              

18-24 years

6,772

32.6

7,234

33.6

7,989

35.5

7,718

32.9

7,764

32.7

8,772

36.6

46,249

34.0

25-44 years

39,724

66.7

40,817

66.8

43,018

68.1

42,003

64.1

41,360

61.5

48,438

69.9

255,360

66.2

45-64 years

74,026

143.5

77,160

145.3

81,120

148.0

82,029

145.6

82,687

143.2

92,803

156.9

489,825

147.2

65-84 years

63,343

294.7

67,925

307.1

73,254

322.9

74,466

317.7

77,996

322.0

87,269

348.2

444,253

319.6

85+ years

11,005

400.6

10,983

380.0

11,459

380.0

11,059

351.4

11,163

339.7

12,375

357.7

68,044

366.9

Total

194,870

124.8

204,119

127.0

216,840

130.5

217,275

126.4

220,970

125.4

249,657

138.0

1,303,731

128.8

Provider setting

              

MBS

145,804

93.4

150,747

93.8

159,136

95.7

159,470

92.8

158,671

90.1

182,730

101.0

956,558

94.5

Public Hospital

49,066

31.4

53,372

33.2

57,704

34.7

57,805

33.6

62,299

35.4

66,927

37.0

347,173

34.3

Total

194,870

124.8

204,119

127.0

216,840

130.5

217,275

126.4

220,970

125.4

249,657

138.0

1,303,731

128.8

  1. *Crude rate given in CT scans per 1,000 person-years.