Table 2: Baseline characteristics of subjects.

CharacteristicsM ± SE or N (%)
0 e-mails ( )1–7 e-mails ( )≥8 e-mails ( ) value

Age (years)56.7 ± 0.557.0 ± 0.955.6 ± 0.70.40
Sex: Female (%)120 (52.9)39 (61.9)70 (72.2)0.005

Household income:
 <$60k 80 (35.2) 16 (25.4) 32 (33.0)  0.63
 $60 k–$99,99981 (35.7)24 (38.1)37 (38.1)
 ≥$100 k66 (29.2)23 (36.5)28 (28.9)

Body mass index (kg/m2)
 <25 41 (18.1) 11 (17.5) 18 (18.6)  0.85
 25–29.988 (38.8)29 (46.0)41 (42.3)
 ≥3098 (43.2)23 (36.5)38 (39.2)

Waist circumference
 cm,  cm 143 (63.0) 36 (57.1) 60 (61.9)0.70

Cardiovascular risk factors
 Total cholesterol mmol/L5.3 ± 0.15.1 ± 0.15.4 ± 0.10.23
 Diabetes16 (7.0)5 (7.9)2 (2.1)0.17
 Smoking8 (3.5)3 (4.8)6 (6.3)0.55
 Framingham 10-yr absolute risk9.5 ± 0.48.8 ± 0.79.1 ± 0.60.65

Psychological distress
 Depression7.4 ± 0.57.9 ± 1.08.8 ± 0.80.37
 Stress14.5 ± 0.414.5 ± 0.815.6 ± 0.70.94

Readiness to change
 Exercise3.6 ± 0.043.3 ± 0.13.5 ± 0.10.06
 Diet3.5 ± 0.043.5 ± 0.13.5 ± 0.10.84