Table 2 Adjusted^a linear regression analysis and 95 % confidence intervals (95 % CI) for associations between explanatory factors and the Index of Relative Socioeconomic Disadvantage (IRSD) of fitness trainers usual training location Australian fitness trainers (n = 1,189)

Time as a fitness trainer

 Less than 12 months

-

-

 1–3 years

9.31 (−0.60, 19.22)

0.066

0.42 (−0.01, 0.85)

0.056

 4–9 years

8.68 (−2.36, 19.72)

0.123

0.31 (−0.17, 0.79)

0.209

 10 years or more

6.88 (−3.38, 17.13)

0.189

0.30 (−0.15, 0.74)

0.189

Fitness industry qualification

 Certificate III in Fitness

-

-

 Certificate IV in Fitness

13.44 (3.86, 23.02)

0.006

0.60 (0.20, 1.02)

0.004

 Diploma of Fitness

15.77 (2.17, 29.37)

0.023

0.64 (0.05, 1.22)

0.034

 Undergraduate, graduate or postgraduate degree in Exercise Sciences

23.14 (9.41, 36.86)

0.001

1.10 (0.51, 1.69)

<0.001

Mode of training offered

 Personal trainer

  No

-

-

  Yes

5.61 (−0.75, 11.98)

0.084

0.26 (−0.02, 0.54)

0.065

 Group Instructor

  No

-

-

  Yes

−6.34 (−12.87, 0.20)

0.057

−0.36 (−0.64, −0.07)

0.014

Fitness industry setting

 Large corporate gym or community health centre (>500 members)

-

-

 Medium size gym or fitness centre (between 100–500 members)

−1.40 (−10.78, 7.98)

0.770

−0.06 (−0.46, 0.34)

0.785

 Small studio setting

3.82 (−6.10, 13.72)

0.450

0.17 (−0.26, 0.60)

0.431

 Outdoor setting

2.88 (−6.71, 12.48)

0.555

0.14 (−0.2, 0.56)

0.503

 Train clients from own home

−4.26 (−16.54, 8.01)

0.496

−0.20 (−0.73, 0.33)

0.467

 Visit client’s homes

2.81 (−13.84, 19.45)

0.741

0.25 (−0.47, 0.97)

0.494

 Other

−8.38 (−23.64, 6.89)

0.282

−0.39 (−1.05, 0.28)

0.253