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Article: Sodium is the leading dietary factor associated with urinary calcium excretion in Hong Kong Chinese adults

TitleSodium is the leading dietary factor associated with urinary calcium excretion in Hong Kong Chinese adults
Authors
Issue Date2001
PublisherSpringer U K. The Journal's web site is located at http://www.springer.com/medicine/orthopedics/journal/198
Citation
Osteoporosis International, 2001, v. 12 n. 9, p. 723-731 How to Cite?
AbstractWe conducted a cross-sectional population-based study comprising 1010 Hong Kong Chinese (500 men and 510 women) aged 25-74 years during 1995-6. The study examined the important dietary, lifestyle and anthropometric factors associated with urinary calcium excretion. Dietary intakes were assessed by means of food frequency questionnaire. Spot urine was collected to measure the urinary excretion profiles of calcium (Ca), sodium (Na), potassium (K) and creatinine (Cr). When expressed as ratios of cations to urinary Cr, significant relationships were noted between urinary Ca and Na (r: ∼0.6), and between urinary Ca and K (r: 0.17-0.21). Stepwise multiple linear regression analyses were carried out separately in men and women aged below and above 50 years. We found that urinary Na/Cr was the leading independent factor associated with urinary Ca/Cr in all four age and sex groups. It accounted for 22% of urinary Ca/Cr variations in women aged below 50 years, and 35-43% in the other three age and sex groups. We estimated that urinary Ca excretion increased by about 1.4 (range 1.37-1.43) mmol per 100 mmol increase in urinary Na. Except in men aged 50 years and over, urinary K/Cr was inversely associated with urinary Ca/Cr in all groups. Age was independently and positively associated with urinary Ca/Cr in subjects aged below 50 years. We did not observe any significant relation between urinary Ca/Cr and dietary protein, phosphorus, alcohol drinking and smoking. In conclusion, we found that urinary Na/Cr, but not dietary protein, Ca or phosphorus, is the most important factor influencing urinary Ca/Cr excretion in our population. Urinary K is a potential factor for Ca conservation.
Persistent Identifierhttp://hdl.handle.net/10722/86749
ISSN
2015 Impact Factor: 3.445
2015 SCImago Journal Rankings: 1.460
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorHo, SCen_HK
dc.contributor.authorChen, YMen_HK
dc.contributor.authorWoo, JLFen_HK
dc.contributor.authorLeung, SSFen_HK
dc.contributor.authorLam, THen_HK
dc.contributor.authorJanus, EDen_HK
dc.date.accessioned2010-09-06T09:20:51Z-
dc.date.available2010-09-06T09:20:51Z-
dc.date.issued2001en_HK
dc.identifier.citationOsteoporosis International, 2001, v. 12 n. 9, p. 723-731en_HK
dc.identifier.issn0937-941Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/86749-
dc.description.abstractWe conducted a cross-sectional population-based study comprising 1010 Hong Kong Chinese (500 men and 510 women) aged 25-74 years during 1995-6. The study examined the important dietary, lifestyle and anthropometric factors associated with urinary calcium excretion. Dietary intakes were assessed by means of food frequency questionnaire. Spot urine was collected to measure the urinary excretion profiles of calcium (Ca), sodium (Na), potassium (K) and creatinine (Cr). When expressed as ratios of cations to urinary Cr, significant relationships were noted between urinary Ca and Na (r: ∼0.6), and between urinary Ca and K (r: 0.17-0.21). Stepwise multiple linear regression analyses were carried out separately in men and women aged below and above 50 years. We found that urinary Na/Cr was the leading independent factor associated with urinary Ca/Cr in all four age and sex groups. It accounted for 22% of urinary Ca/Cr variations in women aged below 50 years, and 35-43% in the other three age and sex groups. We estimated that urinary Ca excretion increased by about 1.4 (range 1.37-1.43) mmol per 100 mmol increase in urinary Na. Except in men aged 50 years and over, urinary K/Cr was inversely associated with urinary Ca/Cr in all groups. Age was independently and positively associated with urinary Ca/Cr in subjects aged below 50 years. We did not observe any significant relation between urinary Ca/Cr and dietary protein, phosphorus, alcohol drinking and smoking. In conclusion, we found that urinary Na/Cr, but not dietary protein, Ca or phosphorus, is the most important factor influencing urinary Ca/Cr excretion in our population. Urinary K is a potential factor for Ca conservation.en_HK
dc.languageengen_HK
dc.publisherSpringer U K. The Journal's web site is located at http://www.springer.com/medicine/orthopedics/journal/198en_HK
dc.relation.ispartofOsteoporosis Internationalen_HK
dc.subject.meshAdulten_HK
dc.subject.meshAgeden_HK
dc.subject.meshAnalysis of Varianceen_HK
dc.subject.meshCalcium - urineen_HK
dc.subject.meshCreatinine - urineen_HK
dc.subject.meshCross-Sectional Studiesen_HK
dc.subject.meshDiet - adverse effectsen_HK
dc.subject.meshFemaleen_HK
dc.subject.meshHong Kong - ethnologyen_HK
dc.subject.meshHumansen_HK
dc.subject.meshLinear Modelsen_HK
dc.subject.meshMaleen_HK
dc.subject.meshMiddle Ageden_HK
dc.subject.meshPotassium - urineen_HK
dc.subject.meshSodium Chloride, Dietary - administration & dosage - adverse effects - pharmacologyen_HK
dc.titleSodium is the leading dietary factor associated with urinary calcium excretion in Hong Kong Chinese adultsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0937-941X&volume=12&spage=723&epage=731&date=2001&atitle=Sodium+is+the+leading+dietary+factor+associated+with+urinary+calcium+excretion+in+Hong+Kong+Chinese+adultsen_HK
dc.identifier.emailLam, TH:hrmrlth@hkucc.hku.hken_HK
dc.identifier.authorityLam, TH=rp00326en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1007/s001980170047en_HK
dc.identifier.pmid11605737-
dc.identifier.scopuseid_2-s2.0-0034793460en_HK
dc.identifier.hkuros65201en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0034793460&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume12en_HK
dc.identifier.issue9en_HK
dc.identifier.spage723en_HK
dc.identifier.epage731en_HK
dc.identifier.isiWOS:000171513200004-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridHo, SC=7403716908en_HK
dc.identifier.scopusauthoridChen, YM=35209624500en_HK
dc.identifier.scopusauthoridWoo, JLF=36040369400en_HK
dc.identifier.scopusauthoridLeung, SSF=7202044842en_HK
dc.identifier.scopusauthoridLam, TH=7202522876en_HK
dc.identifier.scopusauthoridJanus, ED=7006936536en_HK

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