Table 1 Prevalence of sedative-hypnotic use from 1997 to 2005

Sample

49, 906

55, 096

60, 193

65, 715

71, 387

77, 240

83, 460

90, 013

96, 51

 65–74

1.6

1.8

2.1

2.1

2.4

2.8

2.9

3.3

4.2

163

9.01

< 0.001

 75–84

2.0

2.5

2.8

2.9

3.4

4.0

4.3

5.5

6.9

245

8.17

< 0.001

 ≧85

2.1

1.5

3.1

3.5

3.6

4.8

5.1

6.9

9.1

333

7.57

< 0.001

 Male

1.6

1.9

2.2

2.3

2.7

3.3

3.3

4.5

6.0

275

6.72

< 0.001

 Female

1.9

2.1

2.3

2.4

2.8

3.3

3.6

4.1

4.9

158

10.85

< 0.001

 BZD (N05CD)

1.5

1.6

1.7

1.6

1.7

1.8

1.8

2.2

3.2

113

3.30

0.013

 Non-BZD (N05CF)

0.2

0.5

0.8

1.0

1.4

1.9

2.2

2.8

3.1

1450

23.05

< 0.001

Total

1.7

2.0

2.3

2.4

2.7

3.3

3.5

4.3

5.5

224

8.26

< 0.001