Limits...
Incidence rates of surgically treated idiopathic carpal tunnel syndrome in blue- and white-collar workers and housewives in Tuscany, Italy.

Mattioli S, Baldasseroni A, Curti S, Cooke RM, Mandes A, Zanardi F, Farioli A, Buiatti E, Campo G, Violante FS - Occup Environ Med (2009)

Bottom Line: Male and female blue-collar workers showed approximately three to sevenfold higher age-specific rates compared to their white-collar counterparts (all p<0.001).Housewives' rates were similar to those of blue-collar female workers up to 40-44 years of age, after which they were significantly lower (p<0.002).Thus, occupational risk factors seem relevant throughout working life.

View Article: PubMed Central - PubMed

Affiliation: Dipartimento di Medicina Interna, dell'Invecchiamento e Malattie Nefrologiche, University of Bologna, Italy. s.mattioli@unibo.it

ABSTRACT

Objectives: Rates of surgically treated carpal tunnel syndrome (CTS) among blue- and white-collar workers and housewives in the general population were compared.

Methods: Surgically treated cases of idiopathic CTS were investigated among 25-59-year-old residents of Tuscany, Italy, during 1997-2000, based on obligatory discharge records from all Italian public/private hospitals, archived according to residence on Tuscany's regional database. Population data were extracted from the 2001 census.

Results: After excluding repeat admissions, 8801 eligible cases were identified. Age-standardised rates (per 100 000 person-years) of surgical CTS were: "blue-collar women", 367.8; "white-collar women", 88.1; "housewives", 334.5; "blue-collar men", 73.5; and "white-collar men", 15.3. Compared with reference categories (same-sex white-collar workers): female blue-collar workers experienced a 4.2-fold higher standardised rate; housewives, a 3.8-fold excess; and male blue-collar workers, a 4.8-fold excess (all p<0.001). Male and female blue-collar workers showed approximately three to sevenfold higher age-specific rates compared to their white-collar counterparts (all p<0.001). Housewives' rates were similar to those of blue-collar female workers up to 40-44 years of age, after which they were significantly lower (p<0.002). At all ages, housewives' rates were much higher (p<0.001) than those of white-collar women.

Conclusions: Surgically treated CTS was three to seven times more common (depending on age/gender) in blue-collar than in white-collar workers, which is difficult to explain by differences in body weight or other individual factors. Thus, occupational risk factors seem relevant throughout working life. The high rates for full-time housewives suggest that domestic chores should be investigated as a possible risk factor for CTS.

Show MeSH

Related in: MedlinePlus

Age-specific incidence rates of surgically treated idiopathic carpal tunnel syndrome according to occupational category in women (A) and men (B).
© Copyright Policy - openaccess
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC2664992&req=5

bwc-66-05-0299-f02: Age-specific incidence rates of surgically treated idiopathic carpal tunnel syndrome according to occupational category in women (A) and men (B).

Mentions: Overall age-standardised incidence rates of surgically treated CTS (per 100 000 person-years) were 255.4 (95% CI 249.6 to 261.2) for women and 46.4 (95% CI 43.8 to 49.0) for men. Among women, age-standardised rates were 367.8 (95% CI 355.1 to 380.5) for blue-collar workers, 334.4 (95% CI 322.0 to 346.9) for housewives, and 88.1 (95% CI 81.9 to 94.2) for white-collar workers. Thus, with respect to their white-collar counterparts, female blue-collar workers had a 4.2-fold higher rate of surgically treated CTS, and housewives had a 3.8-fold excess. Among men, the age-standardised rates were 73.5 (95% CI 68.9 to 78.0) for blue-collar workers and 15.3 (95% CI 13.1 to 17.5) for white-collar workers. Thus, male blue-collar workers experienced a 4.8-fold higher rate of surgically treated CTS with respect to their white-collar counterparts. Table 2 and fig 2 report age-specific rates for women and men according to occupational categories. Of note, sensitivity analysis based on the last 2 years of the observation period generated curves that were very similar to those of the main analysis (data not shown), suggesting that distortion due to inclusion of some prevalent cases was unlikely. All the curves shown in fig 2 broadly displayed expected age-related patterns of CTS incidence,24 characterised by a peak around the ages of 50–54 years in women, and a more progressive rise in men. Highly significant age-related trends in incidence rates were apparent in all the occupational categories under study: rate ratios for each 5-year age class unit were 1.30 (95% CI 1.27 to 1.32) for female blue-collar workers, 1.35 (95% CI 1.30 to 1.40) for female white-collar workers, 1.16 (95% CI 1.14 to 1.18) for housewives, 1.27 (95% CI 1.23 to 1.31) for male blue-collar workers, and 1.29 (95% CI 1.19 to 1.39) for male white-collar workers (always p<0.001 in the score test for trend). Both female and male blue-collar workers showed higher age-specific rates with respect to white-collar workers at all ages (always p<0.001). No difference was apparent between blue-collar female workers and housewives’ rates up to the age of 45–49 years, after which blue-collar female workers’ rates were significantly higher (p<0.002 in both age classes).


Incidence rates of surgically treated idiopathic carpal tunnel syndrome in blue- and white-collar workers and housewives in Tuscany, Italy.

Mattioli S, Baldasseroni A, Curti S, Cooke RM, Mandes A, Zanardi F, Farioli A, Buiatti E, Campo G, Violante FS - Occup Environ Med (2009)

Age-specific incidence rates of surgically treated idiopathic carpal tunnel syndrome according to occupational category in women (A) and men (B).
© Copyright Policy - openaccess
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2664992&req=5

bwc-66-05-0299-f02: Age-specific incidence rates of surgically treated idiopathic carpal tunnel syndrome according to occupational category in women (A) and men (B).
Mentions: Overall age-standardised incidence rates of surgically treated CTS (per 100 000 person-years) were 255.4 (95% CI 249.6 to 261.2) for women and 46.4 (95% CI 43.8 to 49.0) for men. Among women, age-standardised rates were 367.8 (95% CI 355.1 to 380.5) for blue-collar workers, 334.4 (95% CI 322.0 to 346.9) for housewives, and 88.1 (95% CI 81.9 to 94.2) for white-collar workers. Thus, with respect to their white-collar counterparts, female blue-collar workers had a 4.2-fold higher rate of surgically treated CTS, and housewives had a 3.8-fold excess. Among men, the age-standardised rates were 73.5 (95% CI 68.9 to 78.0) for blue-collar workers and 15.3 (95% CI 13.1 to 17.5) for white-collar workers. Thus, male blue-collar workers experienced a 4.8-fold higher rate of surgically treated CTS with respect to their white-collar counterparts. Table 2 and fig 2 report age-specific rates for women and men according to occupational categories. Of note, sensitivity analysis based on the last 2 years of the observation period generated curves that were very similar to those of the main analysis (data not shown), suggesting that distortion due to inclusion of some prevalent cases was unlikely. All the curves shown in fig 2 broadly displayed expected age-related patterns of CTS incidence,24 characterised by a peak around the ages of 50–54 years in women, and a more progressive rise in men. Highly significant age-related trends in incidence rates were apparent in all the occupational categories under study: rate ratios for each 5-year age class unit were 1.30 (95% CI 1.27 to 1.32) for female blue-collar workers, 1.35 (95% CI 1.30 to 1.40) for female white-collar workers, 1.16 (95% CI 1.14 to 1.18) for housewives, 1.27 (95% CI 1.23 to 1.31) for male blue-collar workers, and 1.29 (95% CI 1.19 to 1.39) for male white-collar workers (always p<0.001 in the score test for trend). Both female and male blue-collar workers showed higher age-specific rates with respect to white-collar workers at all ages (always p<0.001). No difference was apparent between blue-collar female workers and housewives’ rates up to the age of 45–49 years, after which blue-collar female workers’ rates were significantly higher (p<0.002 in both age classes).

Bottom Line: Male and female blue-collar workers showed approximately three to sevenfold higher age-specific rates compared to their white-collar counterparts (all p<0.001).Housewives' rates were similar to those of blue-collar female workers up to 40-44 years of age, after which they were significantly lower (p<0.002).Thus, occupational risk factors seem relevant throughout working life.

View Article: PubMed Central - PubMed

Affiliation: Dipartimento di Medicina Interna, dell'Invecchiamento e Malattie Nefrologiche, University of Bologna, Italy. s.mattioli@unibo.it

ABSTRACT

Objectives: Rates of surgically treated carpal tunnel syndrome (CTS) among blue- and white-collar workers and housewives in the general population were compared.

Methods: Surgically treated cases of idiopathic CTS were investigated among 25-59-year-old residents of Tuscany, Italy, during 1997-2000, based on obligatory discharge records from all Italian public/private hospitals, archived according to residence on Tuscany's regional database. Population data were extracted from the 2001 census.

Results: After excluding repeat admissions, 8801 eligible cases were identified. Age-standardised rates (per 100 000 person-years) of surgical CTS were: "blue-collar women", 367.8; "white-collar women", 88.1; "housewives", 334.5; "blue-collar men", 73.5; and "white-collar men", 15.3. Compared with reference categories (same-sex white-collar workers): female blue-collar workers experienced a 4.2-fold higher standardised rate; housewives, a 3.8-fold excess; and male blue-collar workers, a 4.8-fold excess (all p<0.001). Male and female blue-collar workers showed approximately three to sevenfold higher age-specific rates compared to their white-collar counterparts (all p<0.001). Housewives' rates were similar to those of blue-collar female workers up to 40-44 years of age, after which they were significantly lower (p<0.002). At all ages, housewives' rates were much higher (p<0.001) than those of white-collar women.

Conclusions: Surgically treated CTS was three to seven times more common (depending on age/gender) in blue-collar than in white-collar workers, which is difficult to explain by differences in body weight or other individual factors. Thus, occupational risk factors seem relevant throughout working life. The high rates for full-time housewives suggest that domestic chores should be investigated as a possible risk factor for CTS.

Show MeSH
Related in: MedlinePlus