Table 2.

Characteristics of Subjects Who Did or Did Not Complete 12 Weeks of Health Coaching

Baseline CharacteristicsSubjects Who Completed the Study (n = 39)Subjects Who Withdrew (n = 41)P Value*
Age, years53 (11)51 (10).484
Female sex3039.027
Body mass index (kg/m2)34.5 (7.0)35.1 (7.6).705
Caucasian race2827.091
Married/in a committed relationship3322.003
College graduate3233.543
Physical activity (min/wk)324 (291)303 (388).787
Moderate or strenuous physical activity (min/wk)107 (123)158 (345).391
Fruit, vegetable, and bean intake (servings/day)§4.7 (4.0)3.7 (2.4).129
Pop and sugary beverage intake (servings/day)§0.30 (0.48)0.39 (1.00).568
Sleep score16.8 (3.6)16.9 (4.2).902
  • Data shown are mean (standard deviation) or number of subjects.

  • * Two-sample t tests were used to compare the characteristics of subjects who did or did not complete the study. The Pearson χ2 test was used to calculate the exact 2-sided p-value for categorical variables.

  • Two subjects—one who completed the study and one who did not—did not fill out an Health Status Questionnaire (HSQ) at baseline, and demographic data are not available for these individuals, except for sex and race, which were collected outside of questionnaires, as required for institutional review board reporting. For sex and race, the data shown are therefore for 40 subjects who completed the study and 42 subjects who withdrew. Only 4 smokers were in the study, and none of them completed it.

  • Physical activity was from the previously validated, modified version of the Godin Leisure Time Questionnaire, which was used to assess minutes of each type of physical activity.24,25

  • § Diet was assessed using questions from the 2013 Behavioral Risk Factor Surveillance System Questionnaire.23 Intakes of juice, fruit, beans, dark green vegetables, orange vegetables, and other vegetables (½-cup serving sizes) were asked about. Regular and diet soda, and sugar-sweetened beverages (12-oz serving sizes) were asked about.

  • Sleep was assessed using 5 items from the PROMIS Sleep Disturbance Item Bank version 1.0, and 1 additional item as described in the Methods. This resulted in 6 items total scored on a scale of 1 to 526.