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Table 2 Number and incidence of dispensed watch group antibiotic prescriptions and microbiology tests by participants’ characteristics

From: Microbiology testing associated with antibiotic dispensing in older community-dwelling adults

Characteristic

  

Watch group antibiotic prescriptions

Microbiology tests

 

No. (%)

Person-years

No.

Incidence a

No. (%) related to a test b

No.

Incidence

Total

244,299 (100)

242,195

63,306

0.26

11,993 (19)

149,182

0.62

Sex

 Men

110,120 (45)

108,939

25,945

0.24

4908 (19)

58,787

0.54

 Women

134,179 (55)

133,255

37,361

0.28

7085 (19)

90,395

0.68

Age (years)

 45–59

54,148 (22)

54,079

9874

0.18

1648 (17)

23,162

0.43

 60–64

44,072 (18)

43,987

9824

0.22

1643 (17)

21,594

0.49

 65–69

41,952 (17)

41,825

10,274

0.25

1794 (18)

22,786

0.55

 70–74

35,584 (15)

35,394

10,423

0.29

2015 (19)

23,529

0.67

 75–79

26,644 (11)

26,431

8657

0.33

1809 (21)

20,834

0.79

  ≥ 80

41,889 (17)

40,478

14,254

0.35

3084 (22)

37,277

0.92

Education

 University degree or higher

58,569 (24)

58,292

12,378

0.21

2395 (19)

31,232

0.54

 Certificate or vocational education

155,309 (63)

153,930

40,426

0.26

7556 (19)

95,465

0.62

 No certificate

26,824(11)

26,447

9424

0.36

1849 (20)

19,970

0.76

 Missing

3597(1.5)

3527

1078

0.31

193 (18)

2515

0.71

Annual household Incomec

 High

61,321 (25)

61,174

11,917

0.20

2252 (19)

28,887

0.47

 Middle

64,662 (27)

64,297

14,739

0.23

2801 (19)

35,768

0.56

 Low

67,170 (28)

66,197

21,235

0.32

4183 (20)

49,568

0.75

 Unknown

51,146 (21)

50,526

15,415

0.31

2757 (18)

34,959

0.69

Area of residence

 Regional/remote area

113,290 (46)

112,373

25,942

0.23

5132 (20)

67,442

0.60

 Major city

126,392 (52)

125,241

36,317

0.29

6679 (18)

79,168

0.63

 Missing

4617 (1.9)

4581

1047

0.23

182 (17)

2572

0.56

History of chronic diseases

 Asthma

30,608 (13)

30,333

14,635

0.48

2522 (17)

21,914

0.72

 COPD

3540 (1.5)

3272

4702

1.44

810 (17)

4034

1.23

 Cancer

16,355 (6.7)

15,583

5511

0.35

1265 (23)

14,942

0.96

 Diabetes Mellitus

18,730 (7.7)

18,277

7719

0.42

1716 (22)

19,430

1.06

 Choric Kidney Diseases

4532 (1.9)

4127

2381

0.58

632 (27)

7683

1.86

 Cardiovascular diseases d

13,213 (5.4)

12,671

5537

0.44

1182 (21)

12,902

1.02

Residence in LTCFe

 No

236,911 (97)

235,660

59,853

0.25

11,148 (19)

138,282

0.59

 Yes

7388 (3.0)

6535

3453

0.53

845 (25)

10,900

1.68

  1. a: per person-year
  2. b: a watch/reserve prescription was defined as “related to a test” if there is microbiology testing within 14 days prior to or 7 days after the prescription (see methods)
  3. c: It is household income at baseline. Low: < 30,000 AUD, middle: 30000- < 70,000 AUD, high: ≥70,000 AUD
  4. d: Included ischemic heart diseases and stroke
  5. e: LTCF: Long Term Care Facilities