Table 2.

Results of multivariate logistic regression analysis

Parameters	Co-efficient	SE	P	OR	95% CI
					Lower	Upper
Age (years)
20–29	–	–	–	1.000
30–39	0.901	0.230	0.000***	0.406	0.259	0.637
40–49	0.776	0.206	0.000***	0.460	0.307	0.689
50–59	0.340	0.189	0.072	0.712	0.491	1.031
History of consultations with a doctor regarding anemia
Currently undergoing anemia treatment	–	–	–	1.000
History of anemia treatment	0.756	0.430	0.079	2.129	0.916	4.951
Anemia present (No treatment)	0.614	0.240	0.010*	1.848	1.155	2.954
Presence of diseases other than anemia	0.725	0.212	0.001**	2.064	1.362	3.130
Did not consult a doctor	0.377	0.245	0.124	1.458	0.902	2.355
History of analgesics use
2/week	–	–	–	1.000
1/week	0.583	0.361	0.106	1.792	0.883	3.639
3/month	1.078	0.301	0.000***	2.939	1.628	5.304
Sometimes	0.732	0.231	0.002**	2.080	1.323	3.269
No history	0.751	0.171	0.000***	2.119	1.516	2.961
Dietary limitations
Ongoing	–	–	–	1.000
Sometimes	0.491	0.210	0.019*	1.634	1.083	2.465
No limitations	0.384	0.182	0.035*	1.468	1.028	2.096
Frequency of using the bathroom at night (nocturia)
0	–	–	–	1.000
1	0.527	0.412	0.201	0.590	0.263	1.324
2	0.016	0.419	0.969	0.984	0.433	2.237
≥3	0.092	0.484	0.849	0.912	0.353	2.357
Sauna use
Yes	–	–	–	1.000
No	1.049	0.276	0.000***	2.854	1.662	4.900
Hie
No	–	–	–	1.000
Yes	0.183	0.070	0.009**	1.201	1.047	1.378
Feeling exhaustion
Yes	–	–	–	1.000
N/A	0.473	0.174	0.007**	0.623	0.443	0.876
No	0.126	0.178	0.480	1.134	0.800	1.609
Constant	1.025	0.479	0.032*	0.359

CI confidence interval; OR odds ratio; SE standard error

^*P < 0.05

^**P < 0.01

^***P < 0.001