BMC Cardiovascular Disorders

Table 4 Linear regression parameters for associations of ‘grip strength per weight’-trajectory membership with postoperative health-related quality of life after coronary artery bypass grafting

From: Muscle strength trajectories and their association with postoperative health-related quality of life in patients undergoing coronary artery bypass grafting surgery: a prospective cohort study

	Grip strength per weight (N/kg)	Trajectory
		Physical component score
		Beta	95% CI	P-value
Model 1: Univariable	Stable vs high grip strength	− 0.065	− 0.254 to 0.124	0.496
Model 2: Age	Stable vs high grip strength	− 0.058	− 0.256 to 0.139	0.584
Model 2: Age	Age	− 0.025	− 0.222 to 0.172	0.803
Model 3: Age, HR-QoL, and DB	Stable vs high grip strength	0.074	− 0.099 to 0.248	0.398
	Age	− 0.163	− 0.328 to 0.008	0.061
	Diabetes	− 0.340	− 1.216 to − 0.410	< 0.001
	Baseline PCS or MCS	0.428	0.261 to 0.585	< 0.001

		Mental component score
		Beta	95% CI	P-value
Model 1: Univariable	Stable vs high grip strength	0.099	− 0.089 to 0.287	0.300
Model 2: Age	Stable vs high grip strength	0.054	− 0.140 to 0.248	0.583
Model 2: Age	Age	0.161	− 0.033 to 0.355	0.103
Model 3: Age, HR-QoL, and DB	Stable vs high grip strength	0.099	− 0.059 to 0.256	0.218
	Age	− 0.009	− 0.164 to 0.146	0.912
	Diabetes	− 0.259	− 0.405 to − 0.103	0.001
	Baseline PCS or MCS	0.569	0.412 to 0.708	< 0.001

CI Confidence Interval, HR-QoL Health-Related Quality of Life, DB Diabetes, MCS mental component score, PCS physical component score

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