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Table 5 Multiple linear regression model: Determinants of greater self-care

From: Self-care in people with long term health problems: a community based survey

Step Variable R2 R2 change Final β 95% CI
1 Age group 0.088 0.088   
     18 - 40    0.79* 0.20 to 1.38
     41 - 64    0.50* 0.02 to 0.97
     65+    0.00  
  Sex:     
     Male    0.96** 0.54 to 1.37
     Female    0.00  
2 Primary long-term health problem 0.135 0.047   
     Headaches or migraine    -1.12** -1.82 to -0.42
     Tiredness or fatigue    -0.84* -1.45 to -0.23
     Tummy or bowel problems    -1.40** -1.97 to -0.82
     Feeling stressed or anxious    -0.62* -1.23 to -0.02
     Menstrual problems    -2.87** -3.92 to -1.83
     Back pain    0.00  
3 Bothersomeness of problem 0.217 0.082 0.47** 0.23 to 0.72
4 Having a diagnosis 0.243 0.026 0.54* 0.10 to 0.98
5 Have seen a specialist 0.252 0.009 0.49* 0.04 to 0.94
6 Number of long term health conditions 0.265 0.013 0.23* 0.05 to 0.40
7 Sources of health information 0.396 0.131   
     GP    0.01 -0.45 to 0.48
     Nurse    0.80* 0.21 to 1.39
     Pharmacist    0.71* 0.01 to 1.41
     Therapist    0.71 -0.03 to 1.44
     Complementary and alternative medicine    0.89* 0.23 to 1.55
     Friend    1.09** 0.52 to 1.66
     Family member    0.94** 0.44 to 1.45
     Internet chat room/forum    0.50 -1.12 to 2.12
     Support group    0.48 -0.93 to 1.89
     Newspaper or magazine    0.79* 0.03 to 1.54
     TV programme    0.62 -0.38 to 1.61
     Web sites    0.18 -0.34 to 0.71
8 Sources of information trusted 0.400 0.004   
     Formal (GP, nurse, pharmacist, therapist, CAM)    0.20* 0.04 to 0.36
     Informal (Friend, family, forum, support group)    0.06 -0.22 to 0.34
     Media (Paper, TV, website)    -0.10 -0.44 to 0.24
  1. β = regression coefficient
  2. * p < 0.05, ** p < 0.005
  3. Regression coefficients (betas) for variables with mutually exclusive categories (including age, sex and presenting problem) are expressed relative to a reference category. For variables, such as sources of information used, where respondents can select more than one category, there is no reference category: regression coefficients indicate the mean number of additional self-care practices for respondents selecting a particular category compared to respondents not choosing that category