On average among OECD countries, there are about 14 students. per teacher at the secondary level (Table D2.2). As the differences in student-teacher ratios indicate, there are fewer full-time equivalent students per full-. time equivalent teachers at the secondary level than at the primary level of education.
Pain in the hip area may also originate from painful infections or other conditions of the skin, such as shingles. Hip pain may also occur because of a problem with the back or spine. Depending upon the cause of hip pain, the pain may occur when walking, running, or engaging in activity. Bursitis of one of the two bursae of the hip (sacs that provide cushioning between bones and tissues) can cause hip pain.
Causes of Menstrual Back Pain. There could be three reasons for back pain during the womanâs menstrual cycle. This includes: Dysmenorrhea: When the uterus contracts sharply the result is cramping whether it be in the abdomen, upper thighs or back. This is one of the leading causes of back pain during the menstrual cycle.