Table 3 Univariate analyses between the frailty index and characteristics of caregivers

 Age (per 1-year increase)

111

0.004 [0.002; 0.007]

0.001

 Gender (male vs. female gender)

111

− 0.018 [− 0.056; 0.02]

0.36

 Educational level:

111

  Primary (reference)

–

–

  Secondary

−0.027 [− 0.075; 0.022]

0.28

  Tertiary

−0.054 [− 0.095; − 0.012]

0.012

 Professional situation:

111

  Active (reference)

–

–

  Inactive

0.061 [0.01; 0.111]

0.019

  Retired

0.018 [−0.017; 0.054]

0.31

 Socio-professional category (current or past):

110

  High profession (reference)

–

–

  Intermediate profession

0.002 [−0.034; 0.037]

0.93

  Trader, craftsman or farmer

−0.019 [− 0.106; 0.068]

0.67

  Worker

0.044 [− 0.043; 0.131]

0.32

 Civil status (single vs. couple)

110

0.031 [−0.001; 0.064]

0.06

 Financial difficulties for needs

106

0.046 [0.003; 0.089]

0.037

 Homeowner

108

−0.042 [− 0.082; − 0.002]

0.039

 Leisure within the year

110

−0.096 [− 0.15; − 0.041]

0.001

 Epices score (per 10-point increase)

90

0.010 [0.003; 0.018]

0.011

 Social deprivation (precarious vs. non-precarious)

90

0.048 [0.01; 0.087]

0.015

 Relationship to care recipient

101

  Parent (reference)

–

–

  Child

−0.001 [− 0.054; 0.051]

0.96

  Spouse

−0.003 [− 0.065; 0.059]

0.92

  Other

−0.038 [− 0.087; 0.011]

0.13

 Care recipient with neurological disease

100

0.008 [−0.024; 0.040]

0.61

 Caregiver’s self-esteem problems (per 1-point increase)

60

0.001 [−0.004; 0.005]

0.80

 Lack of family support (per 1-point increase)

58

0.003 [−0.001; 0.007]

0.18

 Financial problems (per 1-point increase)

56

0.005 [−0.001; 0.011]

0.08

 Disrupted schedule (per 1-point increase)

60

0.003 [−0.001; 0.006]

0.11

 Health problems (per 1-point increase)

58

0.004 [−0.001; 0.009]

0.15

 Perceived health’ VAS (per 10-point increase)

110

−0.024 [− 0.034; − 0.014]

<  10⁻³

 Financial assistance for long-term illness

100

0.052 [0.013; 0.09]

0.009

 Smoking status:

110

  Never smoker (reference)

–

–

  Former smoker

−0.002 [−0.035; 0.031]

0.91

  Current smoker

−0.018 [− 0.072; 0.036]

0.51

 Audit questionnaire for alcohol misuse:

105

  No misuse

–

–

  Harmful drinking

0.012 [−0.064; 0.088]

0.76

  Alcohol dependence

−0.052 [− 0.149; 0.046]

0.29

 General practitioner consulted within the year

110

0.061 [−0.104; 0.227]

0.47

 Mammography screening within two years

81

−0.02 [− 0.068; 0.029]

0.42

 Cervical smear screening within three years

80

−0.001 [− 0.043; 0.041]

0.97

 Colorectal cancer screening within two years

95

−0.004 [− 0.038; 0.031]

0.84