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Table 1 Demographic characteristics of study participants at each cross-sectional survey

From: Short-term increase in prevalence of nasopharyngeal carriage of macrolide-resistant Staphylococcus aureus following mass drug administration with azithromycin for trachoma control

  Surveya
CCS-1 CCS-2 CCS-3 CCS-3
Arm
 1 × treatment -- -- 375 (100.0%) 0 (0.0%)
 3 × treatment 414 (100.0%) 417 (100.0%) 0 (0.0%) 343 (100.0%)
Age group
  < 10 y 205 (49.5%) 173 (41.5%) 157 (41.9%) 182 (53.1%)
  ≥ 10 y 209 (50.5%) 244 (58.5%) 218 (58.1%) 161 (46.9%)
Gender (males) 218 (52.7%) 209 (50.1%) 198 (52.8%) 158 (46.1%)
Ethnicity (Jola) 408 (98.6%) 407 (97.6%) 346 (92.3%) 333 (97.1%)
Occupation
 None 185 (45.2%) 162 (39.0%) 135 (38.1%) 169 (50.0%)
 Student 148 (36.2%) 149 (35.9%) 128 (36.2%) 90 (26.6%)
 Agriculture 76 (18.6%) 104 (25.1%) 91 (25.7%) 79 (23.4%)
Schooling years
 0 260 (62.8%) 258 (61.9%) 240 (64.0%) 242 (71.8%)
 (1–3) 72 (17.4%) 67 (16.1%) 58 (15.5%) 36 (10.7%)
 (4–6) 51 (12.3%) 48 (11.5%) 11 (2.9%) 25 (7.4%)
  > 6 31 (7.5%) 44 (10.6%) 66 (17.6%) 34 (10.1%)
Able to read (yes) 155 (37.4%) 158 (37.9%) 76 (20.3%) 56 (16.3%)
Able to write (yes) 154 (37.2%) 158 (37.9%) 92 (24.5%) 63 (18.4%)
Recentb health centre visit (yes) 14 (3.4%) 12 (2.9%) 18 (4.8%) 30 (8.8%)
Recentb antibiotic use (yes) 2 (0.5%) 2 (0.5%) 6 (1.6%) 4 (1.2%)
Smoker in the household (yes) 264 (63.8%) 273 (65.5%) 113 (30.2%) 166 (48.7%)
S. pneumoniae carriage (yes) 180 (43.5%) 80 (19.2%) 182 (48.5%) 157 (45.8%)
  1. aSurveys were conducted immediately before the third round of MDA (CSS-1) and at one (CSS-2) and six (CSS-3) months after MDA
  2. bWithin the last 30 days