The data

Data collection

Each wave of data collection takes place over three years, with the young, midlife and older cohorts interviewed over consecutive years. For the first three waves interviewers travelled around Australia to conduct follow up interviews with those who have moved away from the ACT/Queanbeyan area, while those currently living overseas were asked to complete an interview by mail or email. 

This sample diagram (PDF, 93KB) shows the number of participants in each cohort with dates of assessment.

Analysis of PATH data

In addition to project staff, a number of researchers from other organisations have been allowed access to the PATH data for research purposes. A Data Sharing Agreement is required for sharing of PATH data and only de-identified data is released.

Professor Simon Easteal from the John Curtin School of Medical Research is responsible for the genetic analysis using the DNA extracted from the cheek swabs provided at wave 1 while a group of researchers led by Professor Perminder Sachdev at the Neuropsychiatric Institute, University of NSW are focusing on analysis of MRI and blood data. 

Results from physical testing

Some participants like to be able to compare their performance on the physical tests. Results from the three waves of internviewing are shown below for each age group.

Note: FEV = Expired volume in 1 second (litres), FVC = Full lung volume (litres).

20+ age group
  First Interview (1999/2000) Second Interview (2003/2004) Third Interview (2007/2008
Test Females Males Females Males Females Males
Handgrip 29 47 30 48 31 52
FEV/FVC
(height < 160cm)
2.7/3.0 N/A 2.7/3.1 N/A 2.8/3.2 N/A
FEV/FVC
(height 160‑169cms)
3.0/3.3 3.3/3.9 2.9/3.4 3.5/4.2 3.0/3.5 3.5/4.2
FEV/FVC
(height 110‑179cms)
3.2/3.6 4.0/4.5 3.3/3.7 4.0/4.6 3.3/3.9 4.1/4.7
FEV/FVC
(height 180‑189cms)
3.6/4.0 4.3/4.9 3.7/4.1 4.3/5.0 3.7/4.2 4.8/5.7
FEV/FVC
(height ≥ 190cms)
N/A 4.7/5.4 N/A 4.7/5.5 N/A 4.8/5.7
Blood pressure
(systolic/diastolic)
112/72 129/76 110/72 127/77 116/73 131/76
Pulse 72 68 71 68 72 68
40+ age group
  First Interview (2000/2001) Second Interview (2004/2005) Third Interview (2008/2009)
Test Females Males Females Males Females Males
Handgrip 29 47 28 48 28 48
FEV/FVC
(height < 160cm)
2.4/2.8 3.3/3.9 2.3/2.7 2.9/3.5 2.3/2.8 3.2/3.9
FEV/FVC
(height 160‑169cms)
2.7/3.2 3.1/3.6 2.6/3.1 3.1/3.7 2.6/3.2 3.1/3.7
FEV/FVC
(height 110‑179cms)
3.0/3.5 3.5/4.1 2.9/3.4 3.4/4.1 2.9/3.5   3.5/4.2
FEV/FVC
(height 180‑189cms)
3.3/3.98 3.9/4.6 3.2/3.7 3.8/4.6 3.0/3.7 3.8/4.7
FEV/FVC
(height ≥ 190cms)
N/A 4.1/5.1 N/A 4.1/5.0 N/A 4.2/5.2
Blood pressure
(systolic/diastolic)
118/77 132/84 119/78 131/84 79/128 83/135
Pulse 72 71 71 71 71 70
60+ age group
  First Interview (2001/2002) Second Interview (2005/2006) Third Interview (2009/2010)
Test Females Males Females Males Females Males
Handgrip 25 42 23 38 22 40
FEV/FVC
(height < 160cm)
1.8/2.3 2.6/3.0 1.8/2.2 2.4/3.0 1.8/2.3 2.1/2.7
FEV/FVC
(height 160‑169cms)
2.0/2.6 2.5/3.1 2.0/2.5 2.5/3.1 2.0/2.5 2.5/3.2
FEV/FVC
(height 110‑179cms)
2.2/2.8 2.8/3.5 2.1/2.7 2.7/3.4 2.1/2.7 2.7/3.5
FEV/FVC
(height 180‑189cms)
2.6/3.1 3.1/3.9 2.4/3.1 3.0/3.8 2.5/3.1 3.0/3.9
FEV/FVC
(height ≥ 190cms)
N/A 4.2/3.2 N/A 3.3/4.4 N/A 3.2/4.3
Blood pressure
(systolic/diastolic)
136/80 143/86 134/79 142/83 144/78 147/81
Pulse 72 71 71 68 71 67

 

Updated:  23 September 2017/Responsible Officer:  Director/Page Contact:  Business Manager