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Table 3 Use of healthcare resources during the first six years of life by daycare attendance

From: Impact of early daycare on healthcare resource use related to upper respiratory tract infections during childhood: prospective WHISTLER cohort study

Outcome by daycare attendance Number Child-years Rate/100 child-years (95% CI) Adjustedarate ratio (95% CI)
GP consultations for URTI and AOM     
No daycare in first year 2,053 2,424.3 84.7 (81.1 to 88.4) 1.00
Day care in first year 6,643 7,325.2 90.7 (88.5 to 92.9) 1.15 (1.00 to 1.31)
 Age 0 to 2 months 926 1,104.4 83.8 (78.6 to 89.2) 1.05 (0.86 to 1.27)
 Age 3 to 5 months 4,505 5,081.0 88.7 (86.1 to 91.2) 1.13 (0.98 to 1.29)
 Age 6 to 2 months 1,213 1,139.8 106.4 (100.6 to 112.4) 1.32 (1.10 to 1.59)
Antibiotic prescriptions for URTI and AOM     
No daycare in first year 504 2,424.3 20.8 (19.1 to 22.6) 1.00
Day care in first year 1,517 7,325.2 20.7 (19.7 to 21.8) 1.08 (0.91 to 1.28)
 Age 0 to 2 months 214 1,104.4 19.3 (17.0 to 22.0) 1.02 (0.80 to 1.29)
 Age 3 to 5 months 1,012 5,081.0 19.9 (18.7 to 21.1) 1.04 (0.87 to 1.24)
 Age 6 to 12 months 292 1,139.8 25.6 (22.9 to 28.6) 1.32 (1.04 to 1.67)
     Adjusted a hazard ratio (95%CI)
Referral to specialist for URTI and AOM     
No daycare in first year 47 2,424.3 1.9 (1.4 to 2.6) 1.00
Day care in first year 185 7,325.2 2.5 (2.2 to 2.9) 1.43 (1.01 to 2.03)
 Age 0 to 2 months 29 1,104.4 2.6 (1.8 to 3.7) 1.41 (0.87 to 2.28)
 Age 3 to 5 months 120 5,081.0 2.4 (2.0 to 2.8) 1.32 (0.92 to 1.92)
 Age 6 to 12 months 36 1,139.8 3.2 (2.2 to 4.3) 1.89 (1.20 to 2.98)
  1. aAdjusted for gender, parental education level, older siblings and duration of exclusive breastfeeding. AOM, acute otitis media, CI, confidence interval; GP, general practitioner; URTI, upper respiratory tract infection.