Variables Duration of using diaper UTI (+) UTI (-) P value Boys ≤ 4 hours 2 (22.2%) 45 (55.6%) - Girls - 7 (77.8%) 36 (44.4%) 0.058 Boys > 4 hours 3 (11.5%) 42 (65.6%) <0.0001# Girls - 23(88.5%) 22 (34.4%) - Bubble bath (+) ≤ 4 hours 1 (11.1%) 16 (19.8%) 1.00 Bubble bath (-) - 8 (88.9%) 65 (80.2%) - Bubble bath (+) > 4 hours 8 (30.8%) 14 (21.9%) 0.374 Bubble bath (-) - 18(69.2%) 50(78.1%) - Breastfeedingstatus (+) ≤ 4 hours 8 (88.9%) 64 (79%) 0.681 Breastfeedingstatus (-) - 1 (11.1%) 17 (21%) - Breastfeedingstatus (+) > 4 hours 18 (69.2%) 46 (71.9%) 0.802 Breastfeedingstatus (-) - 8 (30.8%) 18 (28.1%) - Constipation (+) ≤ 4 hours 0 (0%) 4 (4.9%) 1.00 Constipation (-)   9 (100%) 77 (95.1%)   Constipation (+) > 4 hours 3 (11.5%) 4 (6.3%) 0.407 Constipation (-)   23 (88.5%) 60 (93.8%)   Malnutrition (+) ≤ 4 hours - - Constant Malnutrition (-)   9 (100%) 81 (100%)   Malnutrition (+) > 4 hours 0 (0%) 1 (1.6%) 1.00 Malnutrition (-)   26 (100%) 63 (98.4%)   Rare frequency of changing diaper* Often frequency of changing diaper ** Very often frequency of changing diaper*** ≤ 4 hours 9 (100%) 0 (0%) - 80 (98.8%) 1 (1.2%) - 1.00 Rare frequency of changing diaper* Often frequency of changing diaper ** Very often frequency of changing diaper*** > 4 hours 24 (92.3%) 2 (7.7%) 0 (0%) 50 (78.1%) 10 (15.6%) 4 (6.3%) 0.229 Back to front wiping habits Front to back wiping habits Dabbing ≤ 4 hours   4 (57.1%) 3 (42.9%) 0 (0%)   8 (22.2%) 27 (75%) 1 (2.8%)   0.163   Back to front wiping habits Front to back wiping habits Dabbing > 4 hours 10 (43.5%) 11 (47.8%) 2 (8.7%) 8 (38.1%) 12 (57.1%) 1 (4.8%) 0.775 Circumcision (+) ≤ 4 hours - - Constant Circumcision (-) - 2 (100%) 45 (100%) - Circumcision (+) > 4 hours 0 (0%) 1 (2.4%) 1.00 Circumcision (-) - 3 (100%) 41 (97.6%) - * diaper change ≤ 4 times a day ** diaper change 4-6 times a day *** diaper change ≥ 7 times a day # significant.

Table 3: The Analysis of modifier variables on the incidence of urinary tract infection and the duration of using diaper