Table 3

General health and functioning in the study population

Variables	Categories	N	Cases n (%)	N	Controls n (%)	p Value*	Adjusted p value†
Own health assessment	Bad/very bad	306	30 (9.8)	351	13 (3.7)	0.002	0.13
How often experienced pain other than in the lower limbs?	≥Every week	295	140 (47.5)	343	111 (32.4)	<0.001	0.040
Hypertension‡	Yes	281	19 (6.8)	340	17 (5.0)	0.35	0.95
Allergy‡	Yes	289	94 (32.5)	341	115 (33.7)	0.75	0.88
Lung diseases‡	Yes	284	14 (4.9)	339	11 (3.2)	0.29	0.27
Kidney/urinary problems‡	Yes	282	31 (9.1)	340	26 (9.2)	0.97	0.42
Metabolic diseases‡	Yes	279	13 (4.7)	339	19 (5.6)	0.60	0.45
Constipation‡	Yes	282	35 (12.4)	340	21 (6.2)	0.007	0.084
Skin problems‡	Yes	281	33 (11.7)	337	27 (8.9)	0.12	0.11
Headache/Migraine‡	Yes	290	143 (49.3)	347	153 (44.1)	0.19	0.81
Psychiatric problems‡	Yes	281	38 (13.5)	337	33 (9.8)	0.15	1.0
Muscle skeletal problems‡	Yes	282	40 (14.2)	334	22 (6.6)	0.002	0.025
Use of analgesic drugs‡	≥Every week	303	43 (14.2)	346	30 (8.7)	0.028	0.39
Use of antidepressants‡	≥Every week	296	16 (5.4)	347	13 (3.7)	0.31	0.95
Use of asthma medication‡	≥Every week	296	14 (4.7)	349	11 (3.2)	0.30	0.79
Use of allergy medicine‡	≥Every week	295	46 (15.6)	348	46 (13.2)	0.39	0.29
Use of dietary supplement‡	≥Every week	302	157 (52.0)	349	236 (67.6)	<0.001	0.012
Use of anticoagulants‡	Every day	296	44 (14.9)	347	4 (1.2)	<0.001	<0.001
Physically worn out after a day's work	Often/always	290	121 (41.7)	331	82 (24.8)	<0.001	0.010
Mentally worn out after a day's work	Often/always	302	173 (57.3)	347	199 (57.3)	1.0	0.41
Sick leave‡	≥2 weeks	288	94 (32.6)	333	79 (23.7)	0.014	0.25

*Wald test.
†Adjusted for possible confounders (age, education, employment, household income, body mass index and smoking).
‡The last 12 months.