Hi, I was wondering if I could get some opinions on the proper way to write 2- to 3-year-olds. Here is an example: "The number of 2- to 3-year-olds enrolled in daycare increase this year." We'd like to stick with numerals rather than writing out the numbers, but what do you think the best form is? The author I'm working for insists "2-3-year-olds" is fine, especially in social science literature, but it doesn't look good or read smoothly to me, and I think it creates confusion, whereas "2- to 3-year-olds" doesn't. Just my opinion. What do you think is right? Thanks!