Skip to main content

Table 5 Linear regression analysis of factors associated with M. catarrhalis density in children who are carriers (n = 129)

From: Risk factors associated with nasopharyngeal carriage and density of Streptococcus pneumoniae, Haemophilus influenzae, Moraxella catarrhalis, and Staphylococcus aureus in young children living in Indonesia

Variable (n) Mean density (log10 GE/ml)a Unadjusted coefficientb (95% CI) P value Adjusted coefficientc (95% CI) P value
Region
 Padang (32) 6.12 reference 0.010 reference 0.165
 Bandung (45) 6.46 0.34 (−0.14, 0.82) 0.28 (−0.22, 0.78)
 Lombok (52) 5.81 −0.31 (−0.77, 0.15) −0.18 (−0.68, 0.33)
Sex
 Female (62) 6.12 reference 0.995   
 Male (67) 6.12 0.00 (−0.37, 0.36)
Residence
 Urban (57) 6.08 reference 0.748 reference 0.980
 Semi-rural (72) 6.14 0.06 (−0.32, 0.44) −0.01 (−0.41, 0.40)
Age 6.12 −0.04 (−0.10, 0.01) 0.126   
Stuntingd
 No (82) 6.02 reference 0.177   
 Yes (47) 6.28 0.26 (−0.12, 0.65)
Maternal education
 Below high school (65) 6.22 reference 0.258   
 High school and above (64) 6.01 −0.21 (−0.58, 0.16)
Parental monthly incomee
  ≤ regional minimum salary (92) 6.11 reference 0.885 reference 0.767
  > regional minimum salary (35) 6.08 −0.03 (−0.45, 0.39) −0.06 (−0.49, 0.36)
Children < 5 y in the household
 1 (100) 6.06 reference 0.297   
 2 or more (27) 6.30 0.24 (−0.22, 0.70)
URTI symptomsf
 No (92) 5.94 reference 0.003 reference 0.035
 Yes (37) 6.55 0.61 (0.21, 1.01) 0.46 (0.03, 0.88)
Exposure to cigarette smoke
 No (69) 6.10 reference 0.863 reference 0.526
 Yes (60) 6.13 0.03 (−0.34, 0.41) 0.12 (−0.27, 0.52)
Wood-fuelled stove in home
 No (113) 6.17 reference 0.117 reference 0.534
 Yes (16) 5.72 −0.45 (−1.01, 0.11) −0.20 (−0.83, 0.43)
H. influenzae carriage
 No (81) 6.05 reference 0.351   
 Yes (48) 6.23 0.18 (−0.20, 0.57)
S. pneumoniae carriage
 No (45) 5.87 reference 0.059 reference 0.207
 Yes (84) 6.25 0.37 (−0.01, 0.76) 0.25 (−0.14, 0.65)
S. aureus carriage
 No (128) 6.11 reference 0.236   
 Yes (1) 7.38 1.27 (−0.84, 3.39)
  1. aM. cattarhalis density reported in log10 genome equivalents/ml
  2. bCoefficient is the difference in means determined by linear regression
  3. cAdjusted for region, residence type, income, upper respiratory tract infection (URTI) symptoms, cigarette smoke exposure, wood-fuelled stove, and S. pneumoniae carriage
  4. dStunting (chronic undernutrition) defined as length/height-for-age z-score below −2 standard deviations of the median
  5. eRegional minimum salary rates (2016) were 1,800,725 Indonesian rupiah (IDR) in Padang, 2,626,940 IDR in Bandung, and 1,550,000 IDR in Lombok
  6. fURTI symptoms include rhinorrhea, cough, and/or tonsillitis