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Table 2 Nutritional outcomes compared between the control and intervention periods

From: The efficacy of Protected Mealtimes in hospitalised patients: a stepped wedge cluster randomised controlled trial

  Control period
n = 210
Intervention period
n = 206
Cumulative unit-level effect of intervention over timea (coefficient [robust 95% CI], p value) Intracluster correlation coefficient: unit (95% CI) Intracluster correlation coefficient: patient within unit (95% CI) Cumulative unit-level effect of intervention over timea (adjusted coefficient [robust 95% CI], p value) Intracluster correlation coefficient: unit (95% CI) Intracluster correlation coefficient: patient within unit (95% CI)
Energy intake (kJ/day) (mean ± SD) 6532 ± 2328 6479 ± 2486 -51 (-699 to 597), p = 0.876 1.14 × 1011 (NA to 1) 0.43 (0.37 to 0.50) 515 (-237 to 1269), p = 0.179 2.37 × 1021 (2.37 × 1021 to 2.37 × 1021) 0.31 (0.24 to 0.40)
Protein intake (g/day) (mean ± SD) 67.0 ± 25.2 68.6 ± 26.0 -0.63 (-7.585 to 6.334), p = 0.860 1.43 × 1016 (1.43 x 1016 to 1.43 × 1016) 0.005 (3.52 × 109 to 1.00) 2.53 (-5.56 to 10.62), p = 0.540 3.06 × 1014 (NA to 1) 0.002 (1.47 × 1018 to 1)
Energy deficitb (kJ/day) (mean ± SD) 1392 ± 3037 1116 ± 2967 -291 (-1104 to 521), p = 0.483 0.04 (0.005 to 0.28) 0.73 (0.65 to 0.79) -1405 (-2354 to -457), p = 0.004 0.015 (0.0003 to 0.44) 0.73 (0.65 to 0.79)
Protein deficitb (g/day) (mean ± SD) 7.1 ± 32.1 2.6 ± 30.1 -0.44 (-6.69 to 5.80), p = 0.890 0.01 (0.0002 to 0.38) 0.67 (0.59 to 0.75) -0.44 (-6.69 to 5.81), p = 0.890 1.86 × 106 (NA to 1) 0.33 (0.25 to 0.42)
  1. SD standard deviation, CI confidence interval;
  2. aData clustered by ward
  3. bDeficit calculated as the difference between estimated intake and estimated requirements