What's the rush? Internal validity is not a trivial pursuit.
Christine R
CR
Kovach
D005851:Geriatric Nursing; D006801:Humans; D015337:Multicenter Studies as Topic / Q000592:standards; D015399:Nursing Research / Q000592:standards*; D016032:Randomized Controlled Trials as Topic / Q000379:methods / Q000592:standards*; D015203:Reproducibility of Results; D012107:Research Design / Q000592:standards*