Health-related quality of life of patients diagnosed with COPD in Extremadura, Spain: results from an observational study

Table 3 SGRQ-C Score. Total and based on subgroups (level of severity, gender and age group)

Subgroups	Number of valid cases	Symptoms		Activity		Impacts		Total score
Subgroups	Number of valid cases	mean ± SD	p-value	mean ± SD	p-value	mean ± SD	p-value	mean ± SD	p-value
Level of severity
GOLD I	41	38.6 ± 22.6	< 0.001	45.7 ± 28.8	< 0.001	27.6 ± 26.8	0.001	35.1 ± 25.1	< 0.001
GOLD II	79	40.3 ± 22.1		53.2 ± 25.9		33.4 ± 26.8		40.7 ± 23.6
GOLD III	35	62.3 ± 23.0		73.5 ± 23.3		54.8 ± 28.9		61.9 ± 24.8
GOLD IV	5	55.1 ± 26.1		70.1 ± 25.5		46.3 ± 33.7		55.2 ± 28.2
Gender
Male	308	41.6 ± 23.1	0.256	50.6 ± 28.5	0.004	31.1 ± 27.2	0.002	39.0 ± 24.9	0.003
Female	78	44.4 ± 23.3	0.256	61.3 ± 28.0	0.004	42.0 ± 26.9	0.002	48.4 ± 24.3	0.003
Age group
Under 65	80	39.8 ± 22.2	0.376	44.7 ± 28.7	0.006	28.8 ± 24.7	0.167	35.6 ± 23.4	0.052
65 years or older	306	42.8 ± 23.4	0.376	54.8 ± 28.4	0.006	34.5 ± 28.1	0.167	42.2 ± 25.3	0.052
Total	386	42.2 ± 23.2		52.7 ± 28.7		33.3 ± 27.5		40.9 ± 25.0

SGRQ-C St. George Respiratory Questionnaire – COPD, COPD chronic obstructive pulmonary disease, SD standard deviation. Columns 3 to 6 show the mean and SD that correspond to the number of valid cases shown on column 2

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