Health Behaviour Research Centre, Department of Epidemiology and Public Health, University College London, London, England.
Psychobiology Group, Department of Epidemiology and Public Health, University College London, London, England.
JAMA Intern Med. 2015 Mar;175(3):385-92. doi: 10.1001/jamainternmed.2014.7554.
Couples are highly concordant for unhealthy behaviors, and a change in one partner's health behavior is often associated with a change in the other partner's behavior. However, no studies have explicitly compared the influence of having a partner who takes up healthy behavior (eg, quits smoking) with one whose behavior is consistently healthy (eg, never smokes).
To examine the influence of partner's behavior on making positive health behavior changes.
DESIGN, SETTING, AND PARTICIPANTS: We used prospective data from married and cohabiting couples (n, 3722) participating in the English Longitudinal Study of Ageing, a large population-based cohort of older adults (≥50 years). Studying men and women who had unhealthy behaviors in 3 domains at baseline (ie, smoking, physically inactive, or overweight/obese), we used logistic regression analysis to examine the influence of the partner's behavior in the same domain on the odds of positive health behavior change over time.
Smoking cessation, increased physical activity, and 5% weight loss or greater.
Across all domains, we found that when one partner changed to a healthier behavior (newly healthy), the other partner was more likely to make a positive health behavior change than if their partner remained unhealthy (smoking: men 48% vs 8%, adjusted odds ratio [OR], 11.82 [95% CI, 4.84-28.90]; women 50% vs 8%, OR, 11.23 [4.58-27.52]) (physical activity: men 67% vs 26%, OR, 5.28 [3.70-7.54]; women 66% vs 24%, OR, 5.36 [3.74-7.68]) (weight loss: men 26% vs 10%, OR, 3.05 [1.96-4.74]; women 36% vs 15%, OR, 3.08 [1.98-4.80]). For smoking and physical activity, having a consistently healthy partner also predicted positive change, but for each domain, the odds were significantly higher in individuals with a newly healthy partner than those with a consistently healthy partner (smoking: men OR, 3.08 [1.43-6.62]; women OR, 5.45 [2.44-12.16]) (physical activity: men OR, 1.92 [1.37-2.70]; women OR, 1.84 [1.33-2.53]) (weight loss: men OR, 2.28 [1.36-3.84]; women OR, 2.86 [1.55-5.26]).
Men and women are more likely to make a positive health behavior change if their partner does too, and with a stronger effect than if the partner had been consistently healthy in that domain. Involving partners in behavior change interventions may therefore help improve outcomes.
夫妻双方在不健康行为方面高度一致，一方健康行为的改变通常与另一方行为的改变有关。然而，尚无研究明确比较过伴侣采取健康行为（例如戒烟）和行为一贯健康（例如从不吸烟）对做出积极健康行为改变的影响。
研究伴侣行为对积极健康行为改变的影响。
设计、地点和参与者：我们使用了参加英国老龄化纵向研究的已婚和同居夫妇（n=3722）的前瞻性数据，这是一项针对老年人（≥50 岁）的大型基于人群的队列研究。在基线时，我们研究了在 3 个领域存在不健康行为的男性和女性（即吸烟、不活跃或超重/肥胖），我们使用逻辑回归分析来检查同一领域中伴侣行为对随着时间推移积极健康行为改变的可能性的影响。
戒烟、增加身体活动和减轻 5%或更多体重。
在所有领域，我们发现，如果一方改变为更健康的行为（新的健康），另一方更有可能做出积极的健康行为改变，而不是如果他们的伴侣仍然不健康（吸烟：男性 48%对 8%，调整后的优势比[OR]，11.82[95%CI，4.84-28.90]；女性 50%对 8%，OR，11.23[4.58-27.52]）（身体活动：男性 67%对 26%，OR，5.28[3.70-7.54]；女性 66%对 24%，OR，5.36[3.74-7.68]）（体重减轻：男性 26%对 10%，OR，3.05[1.96-4.74]；女性 36%对 15%，OR，3.08[1.98-4.80]）。对于吸烟和身体活动，有一个一贯健康的伴侣也能预测积极的改变，但对于每个领域，与有一贯健康伴侣的人相比，与新的健康伴侣的人改变的可能性显著更高（吸烟：男性 OR，3.08[1.43-6.62]；女性 OR，5.45[2.44-12.16]）（身体活动：男性 OR，1.92[1.37-2.70]；女性 OR，1.84[1.33-2.53]）（体重减轻：男性 OR，2.28[1.36-3.84]；女性 OR，2.86[1.55-5.26]）。
如果伴侣也这样做，男性和女性更有可能做出积极的健康行为改变，而且效果比伴侣在该领域一直健康更强。因此，让伴侣参与行为改变干预可能有助于改善结果。
