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Table 1 Participant characteristics of club members vs. controls

From: Association of nutrition club membership with markers of health: a cross sectional study

N = 100 club members, N = 100 controls (unless otherwise specified) Club Members Controls P-valuea
Site
 1 30 (30%) 30 (30%) 0.99b
 2 27 (27%) 27 (27%) 0.99b
 3 12 (12%) 12 (12%) 0.99b
 4 13 (13%) 13 (13%) 0.99b
 5 10 (10%) 10 (10%) 0.99b
 6 8 (8%) 8 (8%) 0.99b
Age (yrs) 41.1 ± 10.9 39.7 ± 12.9 0.12
Gender (% male) 36 (36%) 36 (36%) 0.99b
Race/Ethnicity
 White 27 (27%) 27 (27%) 0.99b
 Hispanic/Latino/Spanish 73 (73%) 73 (73%) 0.99b
Annual household income
 Less than $14,999 29 (29%) 34 (34%) 0.46
 $15,000–$29,999 21 (21%) 20 (20%) 0.86
 $30,000–$49,999 16 (16%) 20 (20%) 0.60
 $50,000–99,999 18 (18%) 18 (18%) 0.99
 $100,000–$149,999 10 (10%) 4 (4%) 0.15
 $150,000+ 6 (6%) 4 (4%) 0.73
Current Smokers (%) 6 (6%) 13 (13%) 0.17
Supplement Use 26 (26%) 21 (21%) 0.58
% self-reporting diabetes 11 (11%) 12 (12%) 0.81
% using medication for diabetes 7 (7%) 10 (10%) 0.55
% self-reporting high cholesterol 27 (27%) 12 (12%) 0.008
% using medication for high cholesterol 12 (12%) 9 (9%) 0.61
% self-reporting hypertension 8 (8%) 15 (15%) 0.17
% using medication for hypertension 5 (5%) 13 (13%) 0.08
% self-reporting heart disease 3 (3%) 1 (1%) 0.62
% using medication for heart disease 3 (3%) 0 (0%) n/a
Highest level of education completed
 Never attended school 3 (3%) 1 (1%) 0.62
 Elementary school 31 (31%) 22 (22%) 0.14
 High school 30 (30%) 41 (41%) 0.05
 Professional certificate or college 1–3 yrs 13 (13%) 19 (19%) 0.18
 Bachelor’s degree 17 (17%) 13 (13%) 0.45
 Graduate or professional degree 6 (6%) 4 (4%) 0.75
Health Behaviors
SF36 Health Survey Measures (norm-based)c
 General health 58.2 ± 7.8 52.7 ± 10.8 <0.001
 Bodily pain 54.7 ± 8.7 52.1 ± 10.6 0.04
 Mental health 53.5 ± 9.1 51.0 ± 11.1 0.09
 Physical functioning 55.0 ± 5.4 54.9 ± 4.6 0.78
 Role limitations due to emotional problems 52.5 ± 7.9 51.8 ± 8.6 0.52
 Role limitations due to physical problems 54.5 ± 6.6 53.8 ± 6.5 0.43
 Social functioning 52.7 ± 7.4 51.4 ± 9.4 0.25
 Vitality 57.3 ± 7.6 53.8 ± 9.4 0.006
 Mental health component score 52.9 ± 8.3 50.7 ± 10.7 0.11
 Physical health component score 56.2 ± 6.4 54.3 ± 6.8 0.03
 AHEI score, median ± IQR (range)d 67.7 ± 13.4 (42.8–83.6) 60.4 ± 11.9 (35.5–80.2) <0.001
Physical Activity
 IPAQ walking MET minutes/week, median (range)e 594 (66–11,088) 792 (23.1–11,088) 0.49
 Total steps (per day)f 6310.7 ± 3540.2 5393.8 ± 4045.6 0.12
 IPAQ summary score, median (range)g 3180 (132–27,090) 4293 (99–32,725) 0.27
 MOS sleep summary score, median (range)h 52.2 (23.1–63.8) 50.2 (25.0–63.8) 0.03
 Depression: CESD total score, median (range)i 7.0 (0–42) 6.0 (0–48) 0.45
 % Depressedi 19 (20.0%) 25 (26.3%) 0.40
  1. N (%), mean ± SD, or median (range)
  2. IPAQ International Physical Activity Questionniare, MOS Medical Outcomes Study, CESD Center for Epidemiologic Studies Depression Scale, AHEI Alternative Healthy Eating Index
  3. aPaired t test for age, SF36 health survey measures, food intake behavior, and family/friend encouragement, discouragement, and participation questions; Wilcoxon signed rank test for CESD, IPAQ, MOS sleep summary scores, and AHEI score; McNemar’s test for others. Significant p-values are indicated by italicized numbers in bold
  4. bvariable was part of matching criteria for study
  5. chigher scores indicate better health/ better outcome (ie. better general health, less bodily pain, better mental health, etc.)
  6. dAHEI is an 11 component score measuring diet quality, based on current scientific knowledge, and scores can range from 0 (worst/least healthy) to 120 (best/most healthy); assessed by Block Food Frequency Questionniare (N = 94 pairs), restricting to participants reporting energy intake 500 ≤ kcal ≤6000
  7. eMET = ‘metabolic equivalent task’ which expresses the intensity of a physical activity; walking MET = 3.3 x walking minutes x walking days; thus, an individual walking 30 min per day for 7 days per week would be assigned walking MET = 3.3 × 30 × 7 = 693 MET minutes/week; N = 87 pairs
  8. f N = 88 pairs
  9. gsummary score is sum of MET minutes/week for walking, moderate, and vigorous activity; IPAQ assigns walking 3.3 METs, moderate activity 4.0 METs, and vigorous activity 8.0 METs; N = 97 pairs
  10. h N = 99 pairs; MOS sleep index score based on 6 components and is an overall measure of the extent/severity of sleep problems; higher score indicates fewer sleep-related problems
  11. i N = 95 pairs; score of less than 16 indicates no clinically significant depression, and 16 is sub-threshold for clinical depression