Prevalence of impaired glucose metabolism and potential predictors: a rapid appraisal among ≥45 years old residents of southern Tajikistan 葡萄糖代谢受损的患病率以及潜在的预测因子：一项针对塔吉克斯坦南部年龄 ≥45岁居民的快速评估: Diabetes among adults in southern Tajikistan