. 2016 Aug 11;12:40. doi: 10.1186/s13223-016-0146-9

Table 3.

Factors potentially associated with impairment in main activity performance (WPAI + CIQ:AS) according to the bivariate and simple regression models

Factors	Dimensions of the main activity performance (WPAI+CIQ:AS)
	Work productivity					Academic productivity					Daily activities
	n	Bivariate analysis			Simple regression	n	Bivariate analysis			Simple regression	n	Bivariate analysis			Simple regression
	n	Mean score	SD	P value*	Beta coefficient	n	Mean score	SD	P value*	Beta coefficient	n	Mean score	SD	P value*	Beta coefficient
Age (years)
<35	240	22.75	25.53	0.078	Excluded	144	23.03	26.89	0.022	−0.464	371	23.29	24.19	0.106
≥35	237	19.18	23.61	0.078	Excluded	27	11.38	19.49	0.022	−0.464	263	20.27	22.86	0.106
Sex
Male	248	18.65	23.56	0.022	Excluded	68	19.07	25.17	0.361		305	19.34	22.44	0.004	3.415
Female	229	23.49	25.57	0.022	Excluded	103	22.59	26.82	0.361		329	24.53	24.54	0.004	3.415
Educational level
Basic literacy	6	32.78	33.96	0.044	−5.951	2	20	28.28	0.998		8	20	19.27	0.297
Primary level	48	28.14	26.9			6	20.07	29.41			63	25.71	23.94
Secondary level	188	22.34	25.53			90	20.73	25.5			270	22.33	23.55
Completed university	226	18.13	22.66			70	20.57	25.82			284	20.77	23.48
Duration of AR (years)
< 9	230	20.05	24.01	0.656		108	21.88	26.99	0.589		330	20.09	22.7	0.061	Excluded
≥ 9	243	21.58	25.07	0.656		62	19.84	25.01	0.589		300	24.03	24.52	0.061	Excluded
Number of visits to allergist
<3	263	23.17	24.76	0.009	Excluded	102	23.14	26.46	0.231		357	24.06	23.81	0.005	Excluded
≥3	209	18.46	24.46	0.009	Excluded	68	18.57	25.72	0.231		270	19.48	23.35	0.005	Excluded
Type of AR
Intermittent	133	11.78	18.36	0.000	5.960	53	10.09	17.05	0.000	17.609	182	12.58	16.4	0.000	9.127
Persistent	344	24.53	25.83	0.000	5.960	116	26.45	28.13	0.000	17.609	450	25.91	25.09	0.000	9.127
VALERO severity
Mild	63	9.8	17.86	0.000	8.359	19	10.35	19.31	0.003	Excluded	84	8.69	14.29	0.000	5.656
Moderate	262	17.92	21.56	0.000	8.359	110	19.26	25.13	0.003	Excluded	353	21.22	22.28
Severe	152	30.86	28.5			42	31.13	28.8			197	29.19	26.52
Current AIT
No	110	30.6	25.7	0.000	−9.907	36	31.94	28.34	0.002	−12.421	141	35.67	25.17	0.000	−15.575
Yes	357	18	23.58	0.000	−9.907	132	18.43	25.08	0.002	−12.421	480	17.92	21.76	0.000	−15.575

“Excluded” are the factors discarded by the regression model as potentially associated with productivity impairment.Mean overall scores of the WPAI + CIQ:AS questionnaire are expressed as percentages of impairment and productivity loss

Significance values are in italics

AIT allergen immunotherapy, AR allergic rhinitis, SD standard deviation, WPAI + CIQ:AS Work Productivity and Activity Impairment questionnaire plus Classroom Impairment Questions: Allergy Specific

* P-value for the bivariate analysis was calculated using Mann–Whitney or Kruskal–Wallis tests for independent samples, with a confidence interval of 95 %