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Table 2 Summary of visits with a diagnosis of pharyngotonsillitis, per calendar month (2013–2016 combined). All ages

From: Seasonal variations in use and outcome of rapid antigen detection tests and cultures in pharyngotonsillitis: a register study in primary care

 

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

\(\overline{x }\)

Mean number of weighted visits*

479

502

465

422

419

443

390

374

363

430

431

510

436

Median age, years (IQR)

20 (37–8)

19 (35–7)

18 (35–7)

20 (36–8)

19 (36–8)

20 (36–9)

21 (37–9)

21 (36–11)

19 (34–10)

20 (34–8)

18 (32–7)

19 (35–8)

20 (35–8)

Women, % of visits

(95% CI)

46

(44–48)

46

(43–48)

42

(40–44)

43

(40–45)

41

(39–44)

39

(37–42)

45

(43–48)

44

(42–47)

45

(42–47)

45

(43–47)

43

(41–45)

43

(41–45)

44

(43–44)

RADT used, % of visits (95% CI)

64

(62–66)

65

(63–67)

65

(63–67)

66

(64–68)

65

(63–67)

69

(66–71)

66

(63–68)

64

(61–66)

62

(60–65)

63

(61–66)

66

(63–68)

67

(65–69)

65

(65–66)

Positive RADTs/all RADTs, %

(95% CI)

68

(65–70)

68

(65–70)

68

(65–71)

69

(67–72)

68

(66–71)

66

(63–69)

60

(57–63)

54

(51–57)

56

(53–59)

61

(58–64)

66

(63–68)

68

(65–70)

65

(64–66)

Culture obtained, % of visits

(95% CI)

4.8

(4.0–5.9)

5.5

(4.6–6.6)

5.7

(4.8–6.8)

5.7

(4.7–6.9)

6.1

(5.1–7.4)

6.3

(5.3–7.6)

6.2

(5.1–7.5)

8.8

(7.5–10.3)

8.5

(7.2–10.0)

6.4

(5.4–7.6)

6.6

(5.5–7.9)

4.5

(3.7–5.4)

6.2

(5.8–6.5)

  1. IQR interquartile range; CI confidence interval; RADT rapid antigen detection test for group A streptococci
  2. *The numbers are weighted to the length of the month (divided by the number of days and multiplied by 30)