Hello please help with answering Q4.15-4.17. Thank you.

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.b % 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