Zhao Long-Chao, Yang Zhan, Hu Xiao, He Yan, Liu Dan-Ping, Li Ning-Xiu
Department of Health Related Social and Behavioral Science,West China School of Public Health,Sichuan University,Chengdu 610041,China.
Department of Social Medicine and Health Management,Public Health of Zhengzhou University,Zhengzhou 450001,China.
Sichuan Da Xue Xue Bao Yi Xue Ban. 2018 Jan;49(1):87-92.
To determine the equivalence of SF-12v2 and SF-36v2 for assessing health related quality of life in a general population in Chengdu.
The equivalence between SF-12v2 and SF-36v2 was assessed using reliability,validity and responsiveness.
The eight sub-scales of SF-36v2 had a score ranging from 64.13 to 89.15,compared with a range between 47.45 and 87.92 for SF-12v2. The SF-12v2 had larger standard deviations than the SF-36v2. No floor effects were detected; but ceiling effects were significant in the subscales of physical functioning (PF) ,role-physical (RP),bodily pain (BP),social functioning (SF) and role emotion (RE). The SF-12v2 had higher ceiling effects (56.66%-68.32%) than the SF-36v2 (50.14%-63.87%). The exploratory factor analyses extracted two factors in both cases,representing physical (PCS) and mental health (MCS),respectively. The total variances explained by the common factors reached 64.05% for the SF-36v2 and 55.79% for the SF-12v2. The SF-12v2 PCS and MCS scores explained 91.0% and 80.3% of the total variances of those of the SF-36v2,respectively. The effect size of PCSs ranges from 0.78 to 2.77 in the subpopulations with different health conditions,compared with 0.00-0.57 for MSCs. The relative validity (RV) of PCS-12 to PCS-36 ranged from 0.89 to 0.94,compared with a MCS-12 to MCS-36 range of 0.60-0.75.
SF-12v2 is reliable and valid as a brief substitute version of SF-36v2 with acceptable responsiveness and equitable structure for assessing health related quality of life in the general population of Chengdu. But sub-scale scores were not recommended when using the SF-12v2 due to reduced precision.
确定SF - 12v2与SF - 36v2在评估成都普通人群健康相关生活质量方面的等效性。
采用信度、效度和反应度评估SF - 12v2与SF - 36v2之间的等效性。
SF - 36v2的八个子量表得分范围为64.13至89.15，而SF - 12v2的得分范围为47.45至87.92。SF - 12v2的标准差大于SF - 36v2。未检测到地板效应；但在生理功能（PF）、角色 - 生理（RP）、身体疼痛（BP）、社会功能（SF）和角色情感（RE）子量表中天花板效应显著。SF - 12v2的天花板效应（56.66% - 68.32%）高于SF - 36v2（50.14% - 63.87%）。探索性因子分析在两种情况下均提取了两个因子，分别代表生理健康（PCS）和心理健康（MCS）。共同因子解释的总方差在SF - 36v2中达到64.05%，在SF - 12v2中为55.79%。SF - 12v2 PCS和MCS得分分别解释了SF - 36v2相应总分方差的91.0%和80.3%。在不同健康状况的亚人群中，PCS效应大小范围为0.78至2.77，而MSCs为0.00 - 0.57。PCS - 12与PCS - 36的相对效度（RV）范围为0.89至0.94，而MCS - 12与MCS - 36的范围为0.60 - 0.75。
SF - 12v2作为SF - 36v2的简短替代版本，在评估成都普通人群健康相关生活质量方面具有可靠的效度、可接受反应度和平等结构。但由于精度降低，使用SF - 12v2时不建议使用子量表得分。
