Table 2.
Median Number of Steps Per Day Among African American Breast Cancer Survivors in eHealth Weight Loss Trial.
| Baseline characteristics | Na | Months 1–3 Median (IQR) | p-valueb | Months 4–6 Median (IQR) | p-valueb | Na,c | Months 7–9 Median (IQR) | p-valueb | Months 10–12 Median (IQR) | p-valueb |
|---|---|---|---|---|---|---|---|---|---|---|
|
| ||||||||||
| Overall | 44 | 6787.37 (4610.47) | 6744.95 (3975.27) | 34 | 7162.89 (4766.93) | 6880.34 (4342.89) | ||||
| Intervention group | 0.331 | 0.321 | 0.102 | 0.l22 | ||||||
| Fitbit onlyd | 17 | 7328.73 (5092.47) | 7666.66 (4551.39) | 17 | 8043.57 (5238.08) | 7087.09 (4864.29) | ||||
| SparkPeople + Fitbit | 17 | 6283.85 (3580.10) | 5835.41 (3222.39) | 17 | 6082.80 (3931.91) | 5276.86 (4886.28) | ||||
| Spark Premium + Fitbit | 10 | 6386.03 (5769.07) | 6302.65 (4955.91) | 0 | — | — | ||||
| Age | 0.152 | 0.173 | 0.931 | 0.l95 | ||||||
| < 60 years | 19 | 7328.73 (3357.42) | 7068.26 (2906.48) | 14 | 7162.89 (3116.82) | 7217.04 (2951.84) | ||||
| ≥ 60 years | 25 | 5906.80 (5934.04) | 5763.84 (5275.74) | 20 | 6692.99 (5357.63) | 4890.96 (4900.02) | ||||
| Marital Status | 0.993 | 0.798 | 0.505 | 0.6ll | ||||||
| Married | 17 | 6358.59 (6250.48) | 6468.80 (4920.41) | 13 | 4483.79 (4881.09) | 3706.07 (5048.33) | ||||
| Widowed/divorced | 12 | 6787.37 (2703.66) | 6744.95 (3658.22) | 12 | 7162.89 (2406.56) | 6927.54 (3308.74) | ||||
| Never married/unknown | 14 | 6594.23 (4925.92) | 6416.05 (4457.97) | 8 | 7007.84 (6229.65) | 683314. (6155.11) | ||||
| Employment status | 0.204 | 0.162 | 0.05 | 0.223 | ||||||
| Employed | 17 | 7328.73 (3603.55) | 7637.97 (4115.27) | 10 | 7909.72 (1737.36) | 7552.20 (3576.63) | ||||
| Unemployed | 7 | 8410.06 (6928.39) | 7068.26 (5422.17) | 7 | 6089.62 (6864.17) | 6714.94 (8408.12) | ||||
| Retired | 20 | 5689.39 (4663.82) | 5487.59 (3774.06) | 17 | 5742.97 (5067.95) | 4763.25 (4605.67) | ||||
| Education | 0.151 | 0.136 | 0.966 | 0.757 | ||||||
| High school or less | 6 | 7111.33 (5670.45) | 7393.70 (5790.51) | 5 | 7677.66 (9530.38) | 7829.44 (6465.94) | ||||
| Some college | 15 | 7845.56 (4223.68) | 7637.97 (3437.01) | 11 | 6352.81 (2300.61) | 6927.54 (3031.64) | ||||
| College graduate | 23 | 5371.14 (4237.08) | 5376.51 (4021.86) | 18 | 7219.46 (5570.18) | 5649.53 (4884.66) | ||||
| Number of people in household | 0.449 | 0.488 | 0.253 | 0.573 | ||||||
| 1 | 10 | 6095.33 (6996.88) | 6240.82 (7502.76) | 7 | 6089.62 (5785.20) | 6446.26 (5089.40) | ||||
| 2–3 | 25 | 7021.27 (3703.90) | 7228.79 (2974.14) | 20 | 7390.65 (3752.35) | 6983.63 (3236.92) | ||||
| 4–5 | 9 | 5055.32 (6336.86) | 4381.79 (5498.32) | 7 | 3074.78 (4717.75) | 3896.30 (6875.58) | ||||
| Number of conditions | 0.273 | 0.254 | 0.086 | 0.388 | ||||||
| 0–2 | 20 | 6887.14 (5464.96) | 7583.65 (4537.57) | 12 | 7452.33 (3929.56) | 7050.11 (3647.30) | ||||
| 3–4 | 14 | 6868.76 (3850.44) | 6880.54 (3771.77) | 12 | 7246.62 (3264.96) | 6955.59 (4447.38) | ||||
| ≥5 | 10 | 4628.82 (5323.82) | 5010.37 (4149.52) | 10 | 2999.48 (5491.97) | 4037.24 (6031.73) | ||||
| Charlson comorbidity | 0.073 | 0.084 | 0.105 | 0.573 | ||||||
| 0 | 23 | 6568.61 (6525.90) | 6577.81 (4836.65) | 16 | 7306.92 (4625.23) | 6686.90 (4497.72) | ||||
| 1 | 13 | 7964.15 (2023.76) | 7529.32 (1142.76) | 10 | 7601.21 (4774.10) | 7170.54 (3149.20) | ||||
| ≥2 | 8 | 4626.82 (3356.58) | 4330.36 (2995.74) | 8 | 4333.57 (4115.36) | 4622.32 (5310.58) | ||||
| Breast cancer stage | 0.82 | 0.571 | 0.33 | 0.502 | ||||||
| 0 or I | 16 | 6868.76 (3716.44) | 7379.06 (3935.56) | 13 | 7775.86 (4197.74) | 7190.54 (4195.25) | ||||
| II | 15 | 5906.80 (2372.83) | 5763.84 (3387.73)) | 10 | 6086.21 (37l2.ll) | 5649.53 (3305.ll) | ||||
| III | 7 | 8410.06 (5507.16) | 7068.26 (4798.76) | 7 | 4484.79 (5716.05) | 5210.52 (7539.94) | ||||
| Chemotherapy | 0.232 | 0.751 | 0.972 | 0.632 | ||||||
| No | 16 | 5657.25 (3923.82) | 5840.07 (3290.89) | 13 | 7303.19 (5166.24) | 7859.94 (5402.38) | ||||
| Yes | 28 | 7175.00 (3903.88) | 6920.18 (4488.79) | 21 | 7135.73 (4898.58) | 6639.70 (4099.l4) | ||||
| Years since diagnosis | 0.592 | 0.522 | l | 0.688 | ||||||
| 1–5 | 20 | 7102.08 (4575.50) | 7125.76 (4958.20) | 15 | 7478.11 (5716.05) | 7087.09 (4870.85) | ||||
| ≥ 6 | 14 | 7175.00 (4488.64) | 7000.44 (4100.92) | 9 | 7135.73 (2925.82) | 5649.53 (3352.50) | ||||
| Baseline BMI (kg/m2) | 0.063 | 0.091 | 0.178 | 0.55 | ||||||
| 25–29.9 | 7 | 6358.59 (3432.88) | 7183.26 (3698.28) | 6 | 7601.21 (2990.62) | 7011.84 (3715.16) | ||||
| 30–34.9 | 17 | 7400.92 (5075.16) | 7228.79 (4132.68) | ll | 7190.50 (5739.83) | 7318.79 (5043.48) | ||||
| 35–39.9 | 7 | 7021.27 (8853.72) | 9016.84 (4698.22) | 7 | 8963.09 (6951.95) | 5649.53 (6643.08) | ||||
| 40+ | 11 | 4412.31 (3496.5l) | 4610.64 (3665.33) | l0 | 5113.83 (4931.78) | 4904.19 (4874.66) | ||||
| Smoking status | 0.529 | 0.634 | 0.403 | 0.938 | ||||||
| Never | 31 | 6821.74 (4593.97) | 7068.26 (3508.55) | 22 | 7219.46 (5105.14) | 6833.14 (4453.91) | ||||
| Current or former | 13 | 6283.85 (5077.19) | 6717.80 (4722.66) | l2 | 6639.84 (5093.92) | 6983.63 (3947.89) | ||||
| Baseline QOL category | ||||||||||
| 1 (best) | 12 | 6787.37 (2538.15) | 0.707 | 7013.70 (3928.71) | 0.52 | l0 | 7364.87 (4166.10) | 0.461 | 6642.31 (4348.61) | 0.671 |
| 2 | 11 | 7328.73 (4973.30) | 7183.26 (3901.20) | 8 | 7334.08 (4459.5l) | 6983.63 (820.82) | ||||
| 3 | 12 | 5669.59 (4505.62) | 5322.41 (4890.73) | 8 | 4927.47 (4815.53) | 5649.53 (4173.89) | ||||
| 4 (worst) | 9 | 7281.45 (8084.38) | 7228.79 (6107.19) | 8 | 7278.79 (6761.91) | 6522.65 (7162.62) | ||||
| Fatigue in past 4 weeks | 0.822 | 0.749 | 0.646 | 0.823 | ||||||
| Never—sometimes | 25 | 6568.61 (4603.76) | 6772.09 (4380.58) | l8 | 7308.30 (4847.64) | 6927.54 (4319.57) | ||||
| More often—always | 19 | 7021.27 (4636.47) | 6717.80 (3974.19) | l6 | 6612.68 (5176.72) | 6446.26 (4970.83) | ||||
| Poor physical health in past 30 days | 0.229 | 0.303 | 0.067 | 0.245 | ||||||
| 0 | 22 | 6518.43 (5024.58) | 6276.61 (3618.15) | l4 | 6612.68 (5327.46) | 5649.53 (4631.71) | ||||
| 1–5 | 13 | 7964.15 (6350.28) | 7872.75 (4617.68) | l2 | 7909.72 (4190.98) | 7757.18 (4929.40) | ||||
| > 5 | 9 | 6568.61 (3705.19) | 6468.80 (3674.62) | 8 | 5912.88 (4313.94) | 4904.19 (4954.73) | ||||
| Poor mental health in past 30 days | 0.758 | 0.795 | 0.873 | 0.83 | ||||||
| 0 | 17 | 6821.74 (3650.77) | 7183.26 (3451.22) | l2 | 7552.11 (4159.60) | 6927.54 (4109.32) | ||||
| 1–5 | 11 | 5471.97 (7028.42) | 4364.20 (5297.29) | 8 | 6636.43 (5650.67) | 5802.97 (4452.59) | ||||
| > 5 | 13 | 7281.45 (3698.01) | 7068.26 (2824.97) | l2 | 7219.46 (4828.24) | 7190.54 (4087.57) | ||||
Abbreviation: IQR, Interquartile range.
a
Numbers may not add to total due to missing data.
b
p-value using non-parametric Mann-Whitney U-Test or Kruskal-Wallis Test.
c
N = 34 for Months 7–12 data (Spark Premium + Fitbit group was only in study for 6 months).
d
Fitbit only group started SparkPeople in Month 7.