Leila Kianfard, Shamsaddin Niknami, Farkhondeh Amin Shokravi, Sakineh Rakhshanderou
Design and validation of theory-based perceptions concerning the physical literacy questionnaire for pregnant women (P2LQ-PW)
BMC public health
reliability generalization study spielbergers statetrait anxiety inventory stai conducted total 816 research articles utilizing stai 1990 2000 reviewed classified ignored reliability 73 b mentioned reliability reported reliability coefficients another source 21 c computed reliability data hand 6 articles medically oriented journals shorter somewhat less likely mention compute reliability nonmedically oriented articles perhaps due paradigm differences average reliability coefficients acceptable internal consistency testretest variation present among estimates state testretest coefficients lower internal consistency coefficients score variability predictive internal consistency reliability scores scales predictors age research participants form stai type research design