Table 1 Characteristics of included studies
Study | Year | Country | n | SF curve | Cut-off defining abnormal test | Definition of SGA |
|---|---|---|---|---|---|---|
Calvert et al. [25] | 1982 | Great Britain | 381 | local | One value < 10th percentile, two consecutive values or three isolated values < 10th percentile, one value ≥ 3 cm below mean or three consecutive static or falling values | < 10th percentile, < 5th percentile |
Cnattingius et al. [26] | 1988 | Sweden | 3038 | Westin | One or more values ≥ 3 cm below mean or falling or static values | ≥ two SDs below mean |
Jensen et al. [27] | 1991 | Norway | 831 | Westin | One or more values ≥ 3 cm below mean | < 10th percentile |
Pearce et al. [28] | 1987 | Great Britain | 699 | local | One value < 10th percentile | < 10th percentile |
Persson et al. [29] | 1986 | Sweden | 2919 | local | One value > two SDs below mean | < 10th percentile |
Rogers et al. [30] | 1985 | Great Britain | 250 | local | One or more values ≥ 3 cm below mean or three consecutive static or falling values | < 10th percentile |
Rosenberg et al. [31] | 1982 | Great Britain | 761 | local | Two consecutive or three isolated values < 10th percentile | < 10th percentile |
Stuart et al. [32] | 1989 | Great Britain | 1139 | Calvert | One or more values < 10th percentile after 26 weeks or falling or static values | < 10th percentile |