Please help answer Q4.15-Q4.17.

Q4.15 Examine Table 2. Compare unadjusted vs adjusted odds ratios (OR) across the outcomes. For each outcome in questions 4.15-17, indicate whether there was evidence of confounding: Serum 25(OH)D status, nmol/L o Yes O No Q4.16 Child use of single vitamin D supplement o Yes O No Q4.17 Child use of multivitamins o Yes O No Table 2. Conditional Logistic Regression Analysis of the Association Between Vitamin D Intake and Serum Levels and Early-Childhood Fracture Risk, Toronto, Ontario, Canada, 2009-2013 Cases Controls (n = 206) n = 343) OR 95% CI Adjusted OR" 95% CI No. No % Serum 25(OH)D concentration, nmol/L 88.5 (22.4) 91.6 (31.1) Serum 25(OH)D concentration, 0.96 0.90, 1.03 0.95 0.88, 1.03 per 10-nmol/L increase Intake of cow's milk, cups/day 2 72 35 87 25 1.49 0.96, 2.33 .39 0.85, 2.23 Serum 25(OH)D status, nmol/L 250 195 95 329 96 Referent Referent