I have thinning sides and at mid-back and up. Considering where my male pattern baldness would lead I am not surprised at loss from these areas. If you are losing hair from your sides as well, you are headed for a full NW7 assuming you have male pattern baldness.
From observation, I find it interesting to note that those without male pattern baldness begin graying in the exact areas that we (who are headed for NW7) begin losing hairs from (i.e. at the temples, above the ears and in front, then later at the crown.)