Table 6 Factors associated with nasopharyngeal bacteria carriage among asymptomatic primary school children using bivariate and multivariate analysis at Debre Berhan town, North Shewa Ethiopia, February 1 to April 30, 2021

186 (48.4)

63 (33.9)

123 (66.1)

1.05 (0.69–1.60)

0.829

–

198 (51.6)

65 (32.8)

133 (67.2)

1

153 (39.8)

58 (37.9)

95 (62.1)

1.40 (0.91–2.16)

0.122

1.17 (0.53–2.60)

0.696

231 (60.2)

70 (30.3)

161 (69.7)

1

1

198 (51.6)

76 (38.4)

122 (61.6)

1.60 (1.05–2.47)

0.031

1.67 (0.75–3.75)

0.206

186 (48.4)

52 (28.0)

134 (72.0)

1

1

257 (66.9)

99 (38.5)

158 (61.5)

2.12 (1.30–3.44)

0.002

1.37 (0.73–2.57)

0.324

127 (33.1)

29 (22.8)

98 (77.2)

1

1

44 (11.5)

23 (52.3)

21 (47.7)

6.02 (2.10–17.3)

0.010

4.1 (1.00–15.39)

0.056

119 (31.0)

45 (37.8)

74 (62.2)

3.35 (1.23–8.61)

0.012

2.43 (0.77–7.64)

0.129

124 (32.3)

36 (29.0)

88 (71.0)

2.25 (0.87–5.83)

0.950

1.86 (0.60–5.57)

0.281

58 (15.1)

18 (31.0)

40 (69.0)

2.47 (0.88–6.95)

0.850

2.96 (0.90–9.75)

0.073

39 (10.2)

6 (15.4)

33 (84.6)

1

1

29 (7.6)

18 (62.1)

11 (37.9)

4.77 (1.76–12.93)

0.020

1.64 (0.44–6.13)

0.466

135 (35.2)

47 (34.8)

88 (65.2)

1.56 (0.74–3.28)

0.244

0.82 (0.32–2.09)

0.678

98 (25.5)

35 (35.7)

63 (64.3)

1.62 (0.75–3.52)

0.222

0.89 (0.35–2.29)

0.819

75 (19.5)

16 (21.3)

59 (78.7)

0.79 (0.34–1.86)

0.592

0.56 (0.21–1.49)

0.250

47 (12.2)

12 (25.5)

35 (74.5)

1

1

19 (4.9)

9 (47.4)

10 (52.6)

2.22 (0.84–5.89)

0.107

1.28 (0.35–4.57)

0.706

47 (12.2)

19 (40.4)

28 (59.6)

1.68 (0.84–3.34)

0.140

1.85 (0.78–4.34)

0.159

179 (46.6)

60 (33.5)

119 (66.5)

1.25 (0.77–2.02)

0.367

1.30 (0.74–2.31)

0.364

139 (36.2)

40 (28.8)

99 (71.2)

1

1

112 (29.2)

27 (24.1)

85 (75.9)

1

1

108 (28.1)

39 (36.1)

69 (63.9)

1.78 (0.99–3.19)

0.053

1.57 (0.76–3.26)

0.217

104 (27.1)

40 (38.5)

64 (61.5)

1.97 (1.09–3.54)

0.024

1.10 (0.52–2.34)

0.794

52 (13.5)

20 (38.5)

32 (61.5)

1.97 (0.97–3.99)

0.061

0.94 (0.39–2.40)

0.898

185 (48.2)

49 (26.5)

136 (73.5)

1

1

110 (28.6)

44 (40.0)

66 (60.0)

1.85 (1.12–3.06)

0.016

1.13 (0.58–2.18)

0.710

16 (4.2)

8 (50.0)

8 (50.0)

2.70 (0.99–7.79)

0.053

1.45 (0.39–5.38)

0.574

67 (17.4)

25 (37.3)

42 (62.7)

1.65 (0.91–2.99)

0.097

0.71 (0.32–1.61)

0.418

6 (1.6)

2 (33.3)

4 (66.7)

1.38 (0.25–7.82)

0.710

0.82 (0.10–6.86)

0.862

259 (67.4)

99 (38.2)

160 (61.8)

6.49 (1.49–28.3)

0.013

5.88 (1.26–27.57)

0.024**

102 (26.6)

27 (26.5)

75 (73.5)

3.78 (0.83–17.21)

0.086

2.79 (0.56–13.98)

0.211

23 (6.0)

2 (8.7)

21 (91.3)

1

1

262 (68.2)

74 (28.2)

188 (71.8)

1

1

122 (31.8)

54 (44.3)

68 (55.7)

2.02 (1.29–3.15)

0.002

2.17 (1.24–3.81)

0.006**

245 (63.8)

67 (27.3)

178 (72.7)

1

1

139 (36.2)

61 (43.9)

78 (56.1)

2.08 (1.34–3.22)

0.010

1.54 (0.90–2.65)

0.113

221 (57.6)

53 (24.0)

168 (76.0)

1

1

163 (42.4)

75 (46.0)

88 (54.0)

2.70 (1.75–4.18)

p ≤ 0.01

2.35 (1.37–4.02)

0.002**

–

254 (66.4)

84 (33.1)

170 (66.9)

1

101 (26.3)

37 (36.6)

64 (63.4)

1.17 (0.72–1.89)

0.523

29 (7.6)

7 (24.1)

22 (75.9)

0.64 (0.26–1.57)

0.332

365 (95.1)

115 (31.5)

250 (68.5)

1

1

19 (4.9)

13 (68.4)

6 (31.6)

4.71 (1.75–12.70)

0.020

4.87 (1.49–15.97)

0.009**

358 (93.2)

111 (31.0)

247 (69.0)

1

1

26 (6.8)

17 (65.4)

9 (34.6)

4.20 (1.82–9.72)

0.010

4.08 (1.45–11.53)

0.008**