Reduced forced vital capacity is independently associated with ethnicity, metabolic factors and respiratory symptoms in a Caribbean population: a cross-sectional study

Table 5 Mean adjusted^a pre and post bronchodilator (BD) forced expiratory volume in one second (FEV1) and forced vital capacity (FVC) values (in ml) by the various health variables

Variable	Adjusted Pre-BD Mean FEV1	Adjusted Post-BD Mean FEV1	Adjusted Pre-BD Mean FVC	Adjusted Post-BD Mean FVC
Hospitalisations prior to the age 10			*
No	2171	2223	2786	2801
Yes	2246	2244	3042	3032
Known asthma	***	***
No	2192	2242	2800	2812
Yes	1967	2049	2675	2727
Known respiratory disease	***	***	*
No	2195	2244	2803	2815
Yes	1955	2037	2654	2707
Known hypertension
No	2153	2197	2806	2820
Yes	2177	2233	2741	2764
Known diabetes			*	*
No	2127	2166	2802	2818
Yes	2179	2233	2709	2727
Known cardiac disease
No	2084	2132	2795	2813
Yes	2176	2228	2673	2662
Presence of any known comorbidity			*
No	2184	2236	2814	2824
Yes	2146	2199	2742	2770
Chronic cough
No	2173	2226	2784	2799
Yes	2133	2182	2807	2827
Phlegm
No	2172	2223	2792	2806
Yes	2143	2208	2755	2783
Wheeze in the last 12 months	***	***	***	*
No	2200	2247	2815	2821
Yes	1946	2041	2579	2681
Breathlessness	**	**	***	*
No	2216	2270	2837	2850
Yes	2071	2121	2678	2708
Family history of airway disease
No	2167	2220	2782	2799
Yes	2272	2281	2928	2919

Significant p-values are shown and denoted by * < 0.05; ** < 0.005; *** < 0.001
^aAdjusted for age, sex, height and height-squared with covariates were fixed at the following values: Sex = 0.49; height = 166.43; height-squared = 27,818.0145; Age = 54.93

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