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Table 1 Characteristics of patients who performed a RADT for GAS or a throat culture

From: Association between bacterial finding, antibiotic treatment and clinical course in patients with pharyngotonsillitis: a registry-based study in primary healthcare in Sweden

  RADT for GAS (cohort 1) Throat culture (cohort 2)
Positive
n = 9170
Negative
n = 4611
All
n = 13,781
S. pyogenes1
n = 201
S. dysgalactiae ssp. equisimilis1
n = 190
F. necrophorum1,2
n = 95
Negative
n = 905
All2
n = 1 370
Female, n (%) 5 068 (55) 2 585 (56) 7 653 (56) 111 (55) 119 (63) 57 (60) 509 (56) 785 (57)
Age, years, median (IQR) 19 (7–36) 23 (16–38) 21 (9–37) 27 (12–38) 20 (17–29) 21 (17–26) 23 (17–38) 23 (17–36)
Age 0–14, n (%) 4 056 (44) 1 024 (22) 5 080 (37) 64 (32) 24 (13) 2 (2.1) 146 (16) 236 (17)
Age 15–29, n (%) 1 882 (21) 1 928 (42) 3 810 (28) 45 (22) 119 (63) 75 (79) 422 (47) 646 (47)
Age 30 + , n (%) 3 232 (35) 1 659 (36) 4 891 (35) 92 (46) 47 (25) 18 (19) 337 (37) 488 (36)
RADT performed (cohort 2), n (%)     139 (69) 154 (81) 73 (77) 660 (73) 1 011 (74)
RADT positive/all RADT, n (%)     104 (75) 6 (3.9) 6 (8.2) 83 (9.2) 196 (19)
Antibiotic treatment3, n (%) 8 751 (95) 1 997 (43) 10 748 (78) 151 (75) 97 (51) 52 (55) 429 (47) 717 (52)
Penicillin V, n (% of treated) 7 894 (90) 1 630 (82) 9524 (89) 106 (70) 73 (75) 34 (65) 324 (76) 527 (74)
Clindamycin, n (% of treated) 339 (3.9) 181 (9.1) 520 (4.8) 21 (14) 14 (14) 17 (33) 73 (17) 123 (17)
Cefadroxil, n (% of treated) 345 (3.9) 116 (5.8) 461 (4.3) 20 (13) 8 (8.2) 0 24 (5.6) 52 (7.3)
Other, n (% of treated) 173 (2.0) 70 (3.5) 243 (2.3) 4 (2.6) 2 (2.1) 1 (1.9) 8 (1.9) 15 (2.1)
  1. Characteristics of patients who had a RADT for GAS performed on the same day as a visit to a primary healthcare centre or a culture performed to determine aetiology within seven days of a visit to a primary healthcare centre, in relation to aetiology
  2. RADT Rapid Antigen Detection Test; GAS Group A streptococci (S. pyogenes)
  3. 1Refers to any finding (21 patients had a concomitant finding of two bacteria)
  4. 2To detect F. necrophorum, an extended culture was needed (see Methods section). In total, 625/1 370 (46%) of the patients had an extended culture
  5. 3Refers to antibiotics approved by the Swedish Medical Products Agency for treating pharyngotonsillitis (see Methods section) prescribed on the same day as the index visit. Antibiotic types are expressed as percentages of treated patients