Table 1 Factors independently associated with nasal carriage of S. aureus - results of multiple logistic regression* analysis

Age group

1 to 24 months

348 (35)

206 (32)

142 (41)

Ref

-

-

-

25 to 48 months

374 (37)

251 (38)

123 (35)

0.71

0.11

0.52-0.96

0.028

49 to 72 months

280 (28)

194 (30)

86 (24)

0.64

0.10

0.46-0.89

0.009

Sex

Male

514 (51)

347 (53)

167 (48)

Ref

-

-

-

Female

488 (49)

304 (47)

184 (52)

1.25

0.16

0.96-1.63

0.084

Family size

Up-to 4

347 (35)

238 (37)

109 (31)

Ref

-

-

-

>4 to 10

585 (58)

381 (58)

204 (58)

1.16

0.16

0.88-1.55

0.39

>10

70 (7)

32 (5)

38 (11)

2.59

0.69

1.53-4.37

<0.001

History of any illness in the last 2 weeks

Yes

365 (36)

249 (38)

116 (33)

-

-

-

-

No

637 (64)

402 (62)

235 (67)

0.79

0.11

0.60-1.04

0.103

Acute watery diarrhea ^b

Yes

59 (6)

40 (6)

19 (5)

-

-

-

-

No

943 (94)

611 (94)

332 (95)

0.87

0.25

0.49-1.53

0.639

URTI

Yes

247 (25)

162 (25)

85 (24)

No

755 (75)

489(75)

266 (76)

0.96

0.14

0.71-1.30

0.815

PEM grade III/IV

No

734 (73)

462 (71)

272 (77)

Yes

268 (27)

189 (29)

79 (23)

1.40

0.13

1.04-1.90

0.026