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Table 2 Associations of socio-demographic characteristics, medical variables, and cognitive variables with exercise habits six months after index hospitalization assessed by backward stepwise logistic regression i

From: Illness cognition as a predictor of exercise habits and participation in cardiac prevention and rehabilitation programs after acute coronary syndrome

variable Block-1 Block-2 Block-3
  Odds ratioii(95% CI), P value Odds ratioii(95% CI), P value Odds ratioii(95% CI), P value
Exercise at baseline 3.89 (2.11-7.16), P < 0.001 3.68 (1.94-6.99), P < 0.001 3.91 (1.99-7.68), P < 0.001
Ethnicity 0.29 (0.17-0.50), P < 0.001 0.39 (0.22-0.71),P = 0.002 0.43 (0.23-0.80),p = 0.007
Gender 0.50 (0.25-1.03), P = 0.059 0.48 (0.22-1.01),P = 0.054 0.55 (0.25-1.20), p = 0.134
Age 1.02 (1.00-1.05), P = 0.112 1.03 (1.00-1.06),P = 0.035 1.03 (1.00-1.06), p = 0.057
Education   1.32 (1.04-1.67),P = 0.022 1.42 (1.10-1.82), p = 0.006
Economic situation   0.75 (0.59-0.96),P = 0.020 0.81 (0.63-1.04), p = 0.093
HMO membership   1.54 (0.83-2.86),P = 0.174 1.47 (0.78-2.79), p = 0.235
Diagnosis   2.07 (1.04-4.13),P = 0.040 1.89 (0.93-3.84), p = 0.080
Hospitalization unit   0.55 (0.29-1.06),P = 0.073 0.57 (0.30-1.11), p = 0.098
History of IHD   0.59 (0.34-1.03),P = 0.065 0.75 (0.41-1.36), p = 0.340
Perceived susceptibility to CHD    0.58 (0.42-0.80), p = 0.001
Perceived severity of CHD    1.26 (0.90-1.75), p = 0.173
Perceived benefits of exercise    0.75 (0.51-1.12), p = 0.158
Personal control    1.09 (1.02-1.17), p = 0.016
  Nagelkerke R2 =0.23 Nagelkerke R2 = 0.31 Nagelkerke R2 = 0.36
  1. iP to exit > 0.20, within each block, so that variables in earlier blocks were retained in the final model even if their P values with the introduction of subsequent blocks increased to >0.2.
  2. iiValues: Exercise habits after six months: 0 = no; 1 = yes (dependent variable); Variables included in block-1: Ethnic group: 0 = Jews, 1 = Arabs; Gender: 0 = male, 1 = female; Age introduced as continuous variable (years); Exercise habits at index hospitalization: 0 = no; 1 = yes; Variables included in block-2: SEP introduced as an ordinal variable (10 point scale from 1 = the least well off to 10 = the best off); Birth place: 0 = Israel, 1 = other; Marital status: 0 = married, 1 = other; Education level introduced as an ordinal variable (5 point scale from 1 = no formal education to 5 = Academic Education); Religiosity introduced as an ordinal variable (3 point scale from 1 = Secular to 3 = Religious); Employment status: 1 = yes; 2 = no; economic situation introduced as ordinal variable (6-point scale from 1 = excellent to 6 = very bad); HMO membership: 1 = Clalit, 2 = other; Diagnosis:0 = Myocardial infarction, 1 = Unstable Angina; History of IHD: 0 = no, 1 = yes; hospitalization unit: 1 = cardiac care unit, 2 = internal medicine; Variable included in block-3: Perceived susceptibility to CHD, Perceived severity of CHD, Perceived benefits of exercise, Perceived cost of exercise, Personal control, Treatment control introduced as an ordinal variable (5 point scale from 1 = not at all to 5 = very much.