From: Secular trends in testosterone- findings from a large state-mandate care provider
Source | Design | N | Period | Parameters adjusted for | Is age-adjusted decline significant? | |
---|---|---|---|---|---|---|
before adjustment | after adjustment | |||||
Perheentupa et al. 2013 [7] | Observational, Finnish National Public Health Institute | 3271 | 1972ā2002 | BMI | Yes | Yes |
Mazur et al. 2013 [9] | Longitudinal cohort. US Air-Force veterans | 991 | 1982ā2002 | BMI | Yes | Yes |
Andersson et al. 2007 [6] | Population surveys at Glostrup Uni. Hosp., Denmark | 5350 | 1982ā2001 | BMI | Yes | No |
Travison et al. 2007 [5] | Random sample MA, USA | 1532 | 1987ā2004 | BMI, smoking, medications, chronic illnesses, employment, marital status, general health | Yes* | Yes |
Nyante et al. 2012 [4] | Observational NHANES participants | 2315 | 1988ā2004 | BMI\body fat, waist circumference, ethnicity, alcohol use, smoking, chronic illnesses, general health, medications | Yes | No |
Walsh et al. 2015 [10] | Observational. VA HCS, Pacific NW | 44,762 | 2002ā2011 | None | Yes | NA** |