Bland Helen W, Melton Bridget F, Marshall Elaine S, Nagle Jacquelyn A
J Nurs Meas. 2013;21(3):349-59. doi: 10.1891/1061-3749.21.3.349.
This study assessed the psychometric properties of a modified self-efficacy scale-the Pregnancy-Exercise Self-Efficacy Scale (P-ESES).
Pregnant women completed the P-ESES and physical activity questionnaires (N = 88).
Internal consistency was confirmed by Cronbach's alpha (alpha = 0.838) and equal-length Spearman-Brown (alpha = 8.22). Squared multiple correlation coefficients were calculated showing 9 of 10 items with values greater than the desired .5. A nonrotated exploratory principal components analysis confirmed the same 9 of 10 items loaded on a single factor, accounting for 46.1% of the variance. Each item had an acceptable load value of .40 or higher.
Initial testing of the P-ESES confirmed validity and reliability with the exception of 1 item from the original measure: "Exercising without physician approval".
本研究评估了一种改良的自我效能量表——妊娠-运动自我效能量表（P-ESES）的心理测量特性。
孕妇完成了P-ESES和身体活动问卷（N = 88）。
通过克朗巴哈α系数（α = 0.838）和平行长度斯皮尔曼-布朗系数（α = 8.22）确认了内部一致性。计算了复相关系数的平方，结果显示10个条目中有9个的值大于预期的0.5。未旋转的探索性主成分分析证实，10个条目中有9个加载在单一因子上，占方差的46.1%。每个条目的负荷值均为0.40或更高，可接受。
P-ESES的初步测试证实了其有效性和可靠性，但原始量表中的一个条目“未经医生批准进行锻炼”除外。
