Impact of diabetes mellitus on mortality in pulmonary hypertension: A systematic review and meta-analysis

Table 1 Multivariate regression analysis for continuous and categorical variables

Covariate	Coefficients	Lower bound	Upper bound	Std. error	P value	Omnibus, P value
Model 1 for continuous variables
Intercept	2.774	0.958	4.591	0.927	0.003	0.034
Mean age	-0.036	-0.066	-0.006	0.015	0.018
Female proportion	0.000	-0.000	0.001	< 0.001	0.075
Hypertension proportion	-0.003	-0.013	0.007	0.005	0.534
Follow-up period in years	-0.028	-0.071	0.015	0.022	0.205
Model 2 for subgroup variables (categorical)
Intercept	0.429	-0.820	1.677	0.637	0.501	0.002
United States vs non-United States	0.088	-0.188	0.364	0.141	0.534
Sample size < 200 vs sample size ≥ 200	0.407	-0.097	0.911	0.257	0.113
Follow up < 5 years vs ≥ 5 years	-0.541	-1.251	0.169	0.362	0.135
Mean age < 60 years vs ≥ 60 years	-0.301	-0.637	0.036	0.172	0.080
Study quality score based on NIH risk of bias	0.250	-0.101	0.601	0.179	0.162

NIH: National Institutes of Health.