Skip to main content

Advertisement

Table 3 Mixed effects linear regression models for M.D. Anderson Dysphagia Inventory

From: Functional and quality of life outcomes after partial glossectomy: a multi-institutional longitudinal study of the head and neck research network

Subscale (n) Variable Estimate 95% CI SE t p SDs of Random Effects
Intercept Residual
Emotional (n = 112) Baseline 79.40 75.3 to 83.5 2.08 38.25   9.38 12.27
Sx-RT −4.58 −10.4 to +1.3 2.94 −1.56 .122   
Sx-CRT −8.64 −3.3 to −14.0 2.68 −3.22 .002*
1 month −6.45 −2.7 to −10.2 1.90 −3.39 <.001*
6 month −3.34 −7.2 to +.5 1.97 −1.69 .092
1 year −3.61 −7.9 to +.6 2.16 −1.67 .095
Functional (n = 112) Baseline 84.32 79.6 to 89.0 2.38 35.48   11.70 12.93
Sx-RT −5.62 −12.3 to +1.2 3.45 −1.63 .107
Sx-CRT −13.08 −6.8 to −19.3 3.15 −4.15 <.001*
1 month −8.31 −4.4 to −12.3 2.02 −4.11 <.001*
6 month −5.95 −1.9 to −10.1 2.09 −2.85 .005
1 year −3.96 −8.5 to +.5 2.29 −1.73 .085
Physical (n = 112) Baseline 77.85 73.4 to 82.3 2.29 34.05   11.01 12.75
Sx-RT −7.34 −.8 to −13.8 3.30 −2.23 .028
Sx-CRT −9.74 −3.9 to −15.5 3.01 −3.24 .002*
1 month −7.09 −3.3 to −11.0 1.99 −3.57 <.001*
6 month −3.58 −7.6 to +.5 2.06 −1.74 .084
1 year −3.46 −8.0 to +.9 2.25 −1.54 .126
  1. Note. *p < .0028; Baseline = pre-operative mean estimate for surgery only group; Sx-RT,/Sx-CRT = difference between pre-operative mean scores and baseline for surgery and radiotherapy, and, surgery and chemoradiotherapy groups, respectively; 1 month/6 months/1 year = difference between mean subscale score and baseline for the respective assessment time point for combined cohort; p-value for baseline scores not provided given that it tests the hypothesis that the baseline mean is significantly different from 0, results of which are not clinically meaningful; 95% CI calculated using bootstrapping approach