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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