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Table 1 Comparison between students with and without scabies, and univariable and multivariable logistic regression analyses

From: Prevalence and drivers of human scabies among children and adolescents living and studying in Cameroonian boarding schools

Variable Without scabies (n = 1,564) With scabies (n = 338) OR (95 % CI) P-value aOR (95 % CI)a P-value
  Number (%) Number (%)     
Age group (years)
  ≤ 15 1,039 (79.6) 267 (20.4) 1.90 (1.43–2.52) < 0.0001* 1.11 (0.65–0.87) 0.708
  > 15 525 (88.1) 71 (11.9) 1   1  
Sex
 Females 827 (87.8) 115 (12.2) 1   1  
 Males 737 (76.8) 223 (23.2) 2.18 (1.70–2.78) < 0.0001* 2.06 (1.40–3.01) < 0.0001*
Level of education
 First cycle 1,027 (81.9) 227 (18.1) 1.07 (0.83–1.37) 0.599 1.67 (1.02–2.71) 0.040*
 Second cycle 537 (82.9) 111 (17.1) 1   1  
Number of students in the school
  ≤ 500 438 (90.9) 44 (9.1) 1   1  
  > 500 1,126 (79.3) 294 (20.7) 2.60 (1.86–3.64) < 0.0001* 1.65 (0.99–2.74) 0.054
Number of students using the same toilet
  ≤ 10 25 (86.2) 4 (13.8) 1    
  > 10 1,539 (82.2) 334 (17.8) 1.36 (0.47–3.92) 0.574 / /
Number of students per dormitory
  ≤ 10 84 (77.8) 24 (22.2) 1.35 (0.86–2.16) 0.214 6.99 (3.34–14.71) < 0.0001*
  > 10 1,480 (82.5) 314 (17.5) 1   1  
Number of baths
 At least twice daily 73 (61.3) 46 (38.7) 0.31 (0.21–0.46) < 0.0001* 0.52 (0.25–1.07) 0.076
 Less than twice daily 1,491 (83.6) 292 (16.4) 1   1  
Access to infirmary
 No 772 (80.3) 189 (19.7) 1.30 (1.03–1.65) 0.029* 1.62 (1.12–2.32) 0.009*
 Yes 792 (84.2) 149 (15.8) 1    
Sleeping with others
 No 1,494 (83.6) 293 (16.4) 1   1  
 Yes 70 (60.9) 45 (39.1) 3.28 (2.21–4.87) < 0.0001* 1.29 (0.69–2.41) 0.433
Sharing of beddings, clothes or toilet stuffs
 No 677 (85.4) 116 (14.6) 1   1  
 Yes 887 (80.0) 222 (20.0) 1.46 (1.14–1.87) 0.002* 1.08 (0.73–1.59) 0.700
Usage of soap for baths
 No 150 (65.2) 80 (34.8) 1   1  
 Yes 1,414 (84.6) 258 (15.4) 0.34 (0.25–0.46) < 0.0001* 0.76 (0.44–1.32) 0.329
Finger nails always cut short
 No 352 (74.1) 123 (25.9) 1   1  
 Yes 1,212 (84.9) 215 (15.1) 0.51 (0.40–0.65) < 0.0001* 0.84 (0.55–1.30) 0.439
Ironing of clothes and bedding
 No 1,220 (81.8) 272 (18.2) 1    
 Yes 344 (83.9) 66 (16.1) 0.86 (0.64–1.16) 0.317 / /
Pruritus in the close entourage
 No 999 (90.2) 108 (9.8) 1   1  
 Yes 565 (71.1) 230 (28.9) 3.77 (2.94–4.84) < 0.0001* 1.30 (0.87–1.93) 0.196
Complaining of pruritus
 No 1,441 (96.8) 48 (3.2) 1   1  
 Yes 123 (29.8) 290 (70.2) 70.78 (49.55–101.11) < 0.0001* 93.37 (60.04–145.19) < 0.0001*
  1. Abbreviations: aOR adjusted odds ratio, CI confidence interval, OR odds ratio
  2. aAll variables with P < 0.25 in univariable analyses (plus level of education) were introduced in the multivariable model. The coefficient of determination of this model was R 2 of McFadden = 0.520 (P < 0.0001)
  3. * P-value < 0.05