TABLE 3. BP Levels for Boys by Age and Height Percentile

Age, y BP Percentile SBP, mm Hg

DBP, mm Hg

Percentile of Height

Percentile of Height

5th 10th 25th 50th 75th 90th 95th 5th 10th 25th 50th 75th 90th 95th

1 50th 80 81 83 85 87 88 89 34 35 36 37 38 39 39
90th 94 95 97 99 100 102 103 49 50 51 52 53 53 54
95th 98 99 101 103 104 106 106 54 54 55 56 57 58 58


99th

105

106

108

110

112

113

114

61

62

63

64

65

66

66

2 50th 84 85 87 88 90 92 92 39 40 41 42 43 44 44
90th 97 99 100 102 104 105 106 54 55 56 57 58 58 59
95th 101 102 104 106 108 109 110 59 59 60 61 62 63 63


99th

109

110

111

113

115

117

117

66

67

68

69

70

71

71

3 50th 86 87 89 91 93 94 95 44 44 45 46 47 48 48
90th 100 101 103 105 107 108 109 59 59 60 61 62 63 63
95th 104 105 107 109 110 112 113 63 63 64 65 66 67 67


99th

111

112

114

116

118

119

120

71

71

72

73

74

75

75

4 50th 88 89 91 93 95 96 97 47 48 49 50 51 51 52
90th 102 103 105 107 109 110 111 62 63 64 65 66 66 67
95th 106 107 109 111 112 114 115 66 67 68 69 70 71 71


99th

113

114

116

118

120

121

122

74

75

76

77

78

78

79

5 50th 90 91 93 95 96 98 98 50 51 52 53 54 55 55
90th 104 105 106 108 110 111 112 65 66 67 68 69 69 70
95th 108 109 110 112 114 115 116 69 70 71 72 73 74 74


99th

115

116

118

120

121

123

123

77

78

79

80

81

81

82

6 50th 91 92 94 96 98 99 100 53 53 54 55 56 57 57
90th 105 106 108 110 111 113 113 68 68 69 70 71 72 72
95th 109 110 112 114 115 117 117 72 72 73 74 75 76 76


99th

116

117

119

121

123

124

125

80

80

81

82

83

84

84

7 50th 92 94 95 97 99 100 101 55 55 56 57 58 59 59
90th 106 107 109 111 113 114 115 70 70 71 72 73 74 74
95th 110 111 113 115 117 118 119 74 74 75 76 77 78 78


99th

117

118

120

122

124

125

126

82

82

83

84

85

86

86

8 50th 94 95 97 99 100 102 102 56 57 58 59 60 60 61
90th 107 109 110 112 114 115 116 71 72 72 73 74 75 76
95th 111 112 114 116 118 119 120 75 76 77 78 79 79 80


99th

119

120

122

123

125

127

127

83

84

85

86

87

87

88

9 50th 95 96 98 100 102 103 104 57 58 59 60 61 61 62
90th 109 110 112 114 115 117 118 72 73 74 75 76 76 77
95th 113 114 116 118 119 121 121 76 77 78 79 80 81 81


99th

120

121

123

125

127

128

129

84

85

86

87

88

88

89

10 50th 97 98 100 102 103 105 106 58 59 60 61 61 62 63
90th 111 112 114 115 117 119 119 73 73 74 75 76 77 78
95th 115 116 117 119 121 122 123 77 78 79 80 81 81 82


99th

122

123

125

127

128

130

130

85

86

86

88

88

89

90

11 50th 99 100 102 104 105 107 107 59 59 60 61 62 63 63
90th 113 114 115 117 119 120 121 74 74 75 76 77 78 78
95th 117 118 119 121 123 124 125 78 78 79 80 81 82 82


99th

124

125

127

129

130

132

132

86

86

87

88

89

90

90

12 50th 101 102 104 106 108 109 110 59 60 61 62 63 63 64
90th 115 116 118 120 121 123 123 74 75 75 76 77 78 79
95th 119 120 122 123 125 127 127 78 79 80 81 82 82 83


99th

126

127

129

131

133

134

135

86

87

88

89

90

90

91

13 50th 104 105 106 108 110 111 112 60 60 61 62 63 64 64
90th 117 118 120 122 124 125 126 75 75 76 77 78 79 79
95th 121 122 124 126 128 129 130 79 79 80 81 82 83 83


99th

128

130

131

133

135

136

137

87

87

88

89

90

91

91

14 50th 106 107 109 111 113 114 115 60 61 62 63 64 65 65
90th 120 121 123 125 126 128 128 75 76 77 78 79 79 80
95th 124 125 127 128 130 132 132 80 80 81 82 83 84 84


99th

131

132

134

136

138

139

140

87

88

89

90

91

92

92

15 50th 109 110 112 113 115 117 117 61 62 63 64 65 66 66
90th 122 124 125 127 129 130 131 76 77 78 79 80 80 81
95th 126 127 129 131 133 134 135 81 81 82 83 84 85 85


99th

134

135

136

138

140

142

142

88

89

90

91

92

93

93

16 50th 111 112 114 116 118 119 120 63 63 64 65 66 67 67
90th 125 126 128 130 131 133 134 78 78 79 80 81 82 82
95th 129 130 132 134 135 137 137 82 83 83 84 85 86 87


99th

136

137

139

141

143

144

145

90

90

91

92

93

94

94

17 50th 114 115 116 118 120 121 122 65 66 66 67 68 69 70
90th 127 128 130 132 134 135 136 80 80 81 82 83 84 84
95th 131 132 134 136 138 139 140 84 85 86 87 87 88 89
99th 139 140 141 143 145 146 147 92 93 93 94 95 96 97

The 90th percentile is 1.28 SD, the 95th percentile is 1.645 SD, and the 99th percentile is 2.326 SD over the mean.

For research purposes, the SDs in Table B1 allow one to compute BP Z scores and percentiles for boys with height percentiles given in Table 3 (ie, the 5th, 10th, 25th, 50th, 75th, 90th, and 95th percentiles). These height percentiles must be converted to height Z scores given by: 5% = –1.645; 10% = –1.28; 25% = –0.68; 50% = 0; 75% = 0.68; 90% = 1.28; and 95% = 1.645, and then computed according to the methodology in steps 2 through 4 described in Appendix B. For children with height percentiles other than these, follow steps 1 through 4 as described in Appendix B.