Time-use diaries were collected over a 3-year period for 2 cohorts of 2- and 4-year-old children.... more Time-use diaries were collected over a 3-year period for 2 cohorts of 2- and 4-year-old children. TV viewing declined with age. Time spent in reading and educational activities increased with age on weekdays but declined on weekends. Time-use patterns were sex-stereotyped, and sex differences increased with age. As individuals' time in educational activities, social interaction, and video games increased, their time watching entertainment TV declined, but time spent playing covaried positively with entertainment TV. Educational TV viewing was not related to time spent in non-TV activities. Maternal education and home environment quality predicted frequent viewing of educational TV programs and infrequent viewing of entertainment TV. The results do not support a simple displacement hypothesis; the relations of TV viewing to other activities depend on the program content, the nature of the competing activity, and the environmental context.
carcinoma. A recent prospective double-blind, placebo-controlled trial showed that supplemental c... more carcinoma. A recent prospective double-blind, placebo-controlled trial showed that supplemental calcium (3 g daily calcium carbonate equivalent to 1200 mg elemental calcium) reduced the incidence and number of recurrent adenomas in subjects chosen for a recent history of such lesions (N Engl J Med 1999; 340:101-107). The effect of calcium was again modest (19% reduction in adenoma recurrence and 24% reduction in the number of adenomas over 3 years). The effect was independent of age, sex, or dietary intake of calcium, fat, or fiber. Interestingly, this same group of investigators failed to demonstrate an effect of calcium supplementation on rectal mucosal proliferation in a subset of subjects taking calcium for 6-9 months ( J Natl Cancer Inst 1995;87:1303-1306. The study design and methods for assessing proliferative activity differed substantially from those of Holt et al., making comparison difficult.
... Hiram died in 1993 at the age of 81. His wife, Florene, was born in 1915 and was still living... more ... Hiram died in 1993 at the age of 81. His wife, Florene, was born in 1915 and was still living in Colonia Juarez. Below the image of the temple was the inscription, Together For-ever-a testimony of the Mormon belief in sealing couples for eternity. ...
Time-use diaries were collected over a 3-year period for 2 cohorts of 2- and 4-year-old children.... more Time-use diaries were collected over a 3-year period for 2 cohorts of 2- and 4-year-old children. TV viewing declined with age. Time spent in reading and educational activities increased with age on weekdays but declined on weekends. Time-use patterns were sex-stereotyped, and sex differences increased with age. As individuals' time in educational activities, social interaction, and video games increased, their time watching entertainment TV declined, but time spent playing covaried positively with entertainment TV. Educational TV viewing was not related to time spent in non-TV activities. Maternal education and home environment quality predicted frequent viewing of educational TV programs and infrequent viewing of entertainment TV. The results do not support a simple displacement hypothesis; the relations of TV viewing to other activities depend on the program content, the nature of the competing activity, and the environmental context.
carcinoma. A recent prospective double-blind, placebo-controlled trial showed that supplemental c... more carcinoma. A recent prospective double-blind, placebo-controlled trial showed that supplemental calcium (3 g daily calcium carbonate equivalent to 1200 mg elemental calcium) reduced the incidence and number of recurrent adenomas in subjects chosen for a recent history of such lesions (N Engl J Med 1999; 340:101-107). The effect of calcium was again modest (19% reduction in adenoma recurrence and 24% reduction in the number of adenomas over 3 years). The effect was independent of age, sex, or dietary intake of calcium, fat, or fiber. Interestingly, this same group of investigators failed to demonstrate an effect of calcium supplementation on rectal mucosal proliferation in a subset of subjects taking calcium for 6-9 months ( J Natl Cancer Inst 1995;87:1303-1306. The study design and methods for assessing proliferative activity differed substantially from those of Holt et al., making comparison difficult.
... Hiram died in 1993 at the age of 81. His wife, Florene, was born in 1915 and was still living... more ... Hiram died in 1993 at the age of 81. His wife, Florene, was born in 1915 and was still living in Colonia Juarez. Below the image of the temple was the inscription, Together For-ever-a testimony of the Mormon belief in sealing couples for eternity. ...
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